2. Write the number as an improper fraction.
- 3.14285714288 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:
3.14285714288 = 3.14285714288/1
Turn the top number into a whole number.
- Multiply both the top and the bottom by the same number.
- This number is: 100,000,000,000.
- 1 followed by as many 0-s as the number of digits after the decimal point.
3.14285714288/1 =
(3.14285714288 × 100,000,000,000)/(1 × 100,000,000,000) =
314,285,714,288/100,000,000,000
3. Reduce (simplify) the fraction above:
314,285,714,288/100,000,000,000
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).
314,285,714,288 = 24 × 7 × 13 × 31 × 6,963,083
100,000,000,000 = 211 × 511
Calculate the greatest (highest) common factor (divisor), GCF.
Multiply all the common prime factors by the lowest exponents.
GCF (24 × 7 × 13 × 31 × 6,963,083; 211 × 511) = 24
Divide both the numerator and the denominator by their GCF.
314,285,714,288/100,000,000,000 =
(24 × 7 × 13 × 31 × 6,963,083)/(211 × 511) =
((24 × 7 × 13 × 31 × 6,963,083) ÷ 24) / ((211 × 511) ÷ 24) =
(7 × 13 × 31 × 6,963,083)/(27 × 511) =
19,642,857,143/6,250,000,000
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.
19,642,857,143 ÷ 6,250,000,000 = 3, remainder = 892,857,143 ⇒
19,642,857,143 = 3 × 6,250,000,000 + 892,857,143 ⇒
19,642,857,143/6,250,000,000 =
(3 × 6,250,000,000 + 892,857,143) / 6,250,000,000 =
(3 × 6,250,000,000) / 6,250,000,000 + 892,857,143/6,250,000,000 =
3 + 892,857,143/6,250,000,000 =
3 892,857,143/6,250,000,000