Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,440/900,000,000,104
- The integer number above the bar is called numerator: 779,422,863,440
- The integer number below the bar is called denominator: 900,000,000,104
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 779,422,863,440 ÷ 900,000,000,104
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
Written with exponents:
779,422,863,440 = 2 × 2 × 2 × 2 × 5 × 13 × 749,445,061 = 24 × 5 × 13 × 749,445,061
779,422,863,440 is a composite number.
Written with exponents:
900,000,000,104 = 2 × 2 × 2 × 1,493 × 75,351,641 = 23 × 1,493 × 75,351,641
900,000,000,104 is a composite number.
779,422,863,440/900,000,000,104 =
(779,422,863,440 ÷ 8) / (900,000,000,104 ÷ 8) =
97,427,857,930/112,500,000,013
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
779,422,863,440/900,000,000,104 =
(24 × 5 × 13 × 749,445,061)/(23 × 1,493 × 75,351,641) =
((24 × 5 × 13 × 749,445,061) ÷ 23) / ((23 × 1,493 × 75,351,641) ÷ 23) =
(2 × 5 × 13 × 749,445,061)/(1,493 × 75,351,641) =
97,427,857,930/112,500,000,013
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
97,427,857,930/112,500,000,013 =
97,427,857,930 ÷ 112,500,000,013 =
0.866025403722 ≈
0.87