2. Write the number as an improper fraction.
- 1.18253968256 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:
1.18253968256 = 1.18253968256/1
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.
1.18253968256/1 =
(1.18253968256 × 100,000,000,000)/(1 × 100,000,000,000) =
118,253,968,256/100,000,000,000
3. Reduce (simplify) the fraction above:
118,253,968,256/100,000,000,000
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).
118,253,968,256 = 27 × 923,859,127
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 (27 × 923,859,127; 211 × 511) = 27
Divide both the numerator and the denominator by their GCF.
118,253,968,256/100,000,000,000 =
(27 × 923,859,127)/(211 × 511) =
((27 × 923,859,127) ÷ 27) / ((211 × 511) ÷ 27) =
923,859,127/(24 × 511) =
923,859,127/781,250,000
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.
923,859,127 ÷ 781,250,000 = 1, remainder = 142,609,127 ⇒
923,859,127 = 1 × 781,250,000 + 142,609,127 ⇒
923,859,127/781,250,000 =
(1 × 781,250,000 + 142,609,127) / 781,250,000 =
(1 × 781,250,000) / 781,250,000 + 142,609,127/781,250,000 =
1 + 142,609,127/781,250,000 =
1 142,609,127/781,250,000