Page 250
CHAP. XVII. Of the rule of three with intiers and fractions.
FIrst all the intiers must bee re∣duced into fractions as follow∣eth.
| yards | pounds | yards. |
| If 2¼ | 12½ | 7½ |
| 9/4 | 25/2 | 15/2 |
A treatise of artificial fire-vvorks both for vvarres and recreation with divers pleasant geometricall obseruations, fortifications, and arithmeticall examples. In fauour of mathematicall students. Newly written in French, and Englished by the authour Tho: [sic] Malthus.
About this Item
- Title
- A treatise of artificial fire-vvorks both for vvarres and recreation with divers pleasant geometricall obseruations, fortifications, and arithmeticall examples. In fauour of mathematicall students. Newly written in French, and Englished by the authour Tho: [sic] Malthus.
- Author
- Malthus, Francis.
- Publication
- [London] :: Printed [by W. Jones] for Richard Havvkins, and are to be sold at his shop in Chancerie lane neere to Serieants Inne,
- 1629.
- Rights/Permissions
-
To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.
- Subject terms
- Fireworks -- Early works to 1800.
- Link to this Item
-
http://name.umdl.umich.edu/A06780.0001.001
- Cite this Item
-
"A treatise of artificial fire-vvorks both for vvarres and recreation with divers pleasant geometricall obseruations, fortifications, and arithmeticall examples. In fauour of mathematicall students. Newly written in French, and Englished by the authour Tho: [sic] Malthus." In the digital collection Early English Books Online. https://name.umdl.umich.edu/A06780.0001.001. University of Michigan Library Digital Collections. Accessed June 17, 2024.
Pages
Page 251
the third number of fractions 15, & then againe multiply the product by 4 the denominator of the first num∣ber, and then say 2 times 2, or 4, and 4 times 9 is 36, which must bee set vnder the line, by which you shal di∣uide the first product 1500, and the quotient shall be the number requi∣red, as appeares, 〈 math 〉〈 math 〉
Heere followeth two examples, differing the one from the other; whereof the manner of multiplying the one, is more easier then the other the first is multiplyed as the prece∣dent, but the last is multiplied first
Page 252
by all the intirres, viz. by 3, by 8 and by three, leauing the fraction •• by it selfe, and after all take the thir•• of the intier, viz. of 50000, saying th•• third part of 5 is one rest 2, for the 10 which is valuated at 20, then say the third part of 20 is 6, and so rests 2 for the second 0, and so to the end, and what shall rest at last, shall be set ouer a line, and your 3 4th or 5 vnder the line, then all being added together, you shal diuide the product cutting off the figures to the quanti∣tie of the first number, saying, by ten, by a hundred, by a thousand, by ten thousand, by a hundred thousand, & the remainder is the number requi∣red, as appeareth, 191⅔.
Page 253
The first example.
〈 math 〉〈 math 〉
The second number being mul∣••••plied by the third, doth mount to 57500000, and being diuided by the first multiplyed by 3, as before is taught, the quotient will be 191 2/••0.
Page 254
The second example.
〈 math 〉〈 math 〉