2. Write the number as an improper fraction.
- 17.1313131316 can be written as an improper fraction.
- An improper fraction = the numerator is larger than or equal to the denominator..
Write down the number divided by 1, as a fraction:
17.1313131316 = 17.1313131316/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 10,000,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
17.1313131316/1 =
(17.1313131316 × 10,000,000,000)/(1 × 10,000,000,000) =
171,313,131,316/10,000,000,000
3. Reduce (simplify) the fraction above:
171,313,131,316/10,000,000,000
to the lowest terms, to its simplest equivalent form, irreducible.
To reduce a fraction to the lowest terms divide the numerator and denominator by their greatest (highest) common factor (divisor), GCF.
Factor the numerator and denominator (prime factorization).
171,313,131,316 = 22 × 89 × 809 × 594,829
10,000,000,000 = 210 × 510
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (22 × 89 × 809 × 594,829; 210 × 510) = 22
Divide both the numerator and the denominator by their GCF.
171,313,131,316/10,000,000,000 =
(22 × 89 × 809 × 594,829)/(210 × 510) =
((22 × 89 × 809 × 594,829) ÷ 22) / ((210 × 510) ÷ 22) =
(89 × 809 × 594,829)/(28 × 510) =
42,828,282,829/2,500,000,000
4. The fraction is an improper one, rewrite it as a mixed number (mixed fraction):
- A mixed number = an integer number and a proper fraction, of the same sign.
- Example 1: 2 1/5; Example 2: - 1 3/7.
- A proper fraction = the numerator is smaller than the denominator.
42,828,282,829 ÷ 2,500,000,000 = 17, remainder = 328,282,829 ⇒
42,828,282,829 = 17 × 2,500,000,000 + 328,282,829 ⇒
42,828,282,829/2,500,000,000 =
(17 × 2,500,000,000 + 328,282,829) / 2,500,000,000 =
(17 × 2,500,000,000) / 2,500,000,000 + 328,282,829/2,500,000,000 =
17 + 328,282,829/2,500,000,000 =
17 328,282,829/2,500,000,000