Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,428/900,000,000,022
- The integer number above the bar is called numerator: 779,422,863,428
- The integer number below the bar is called denominator: 900,000,000,022
- 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 = 779,422,863,428 ÷ 900,000,000,022
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:
779,422,863,428 = 2 × 2 × 11 × 11 × 1,610,377,817 = 22 × 112 × 1,610,377,817
779,422,863,428 is a composite number.
900,000,000,022 = 2 × 1,259 × 6,691 × 53,419
900,000,000,022 is a composite number.
779,422,863,428/900,000,000,022 =
(779,422,863,428 ÷ 2) / (900,000,000,022 ÷ 2) =
389,711,431,714/450,000,000,011
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.
779,422,863,428/900,000,000,022 =
(22 × 112 × 1,610,377,817)/(2 × 1,259 × 6,691 × 53,419) =
((22 × 112 × 1,610,377,817) ÷ 2) / ((2 × 1,259 × 6,691 × 53,419) ÷ 2) =
(2 × 112 × 1,610,377,817)/(1,259 × 6,691 × 53,419) =
389,711,431,714/450,000,000,011
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
389,711,431,714/450,000,000,011 =
389,711,431,714 ÷ 450,000,000,011 =
0.866025403788 ≈
0.87