Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,472/900,000,000,163
- The integer number above the bar is called numerator: 779,422,863,472
- The integer number below the bar is called denominator: 900,000,000,163
- 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 = 779,422,863,472 ÷ 900,000,000,163
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:
779,422,863,472 = 2 × 2 × 2 × 2 × 11 × 43 × 59 × 1,745,581 = 24 × 11 × 43 × 59 × 1,745,581
779,422,863,472 is a composite number.
900,000,000,163 = 11 × 1,039 × 78,747,047
900,000,000,163 is a composite number.
779,422,863,472/900,000,000,163 =
(779,422,863,472 ÷ 11) / (900,000,000,163 ÷ 11) =
70,856,623,952/81,818,181,833
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.
779,422,863,472/900,000,000,163 =
(24 × 11 × 43 × 59 × 1,745,581)/(11 × 1,039 × 78,747,047) =
((24 × 11 × 43 × 59 × 1,745,581) ÷ 11) / ((11 × 1,039 × 78,747,047) ÷ 11) =
(24 × 43 × 59 × 1,745,581)/(1,039 × 78,747,047) =
70,856,623,952/81,818,181,833
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
70,856,623,952/81,818,181,833 =
70,856,623,952 ÷ 81,818,181,833 =
0.866025403701 ≈
0.87