Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,462/900,000,000,117
- The integer number above the bar is called numerator: 779,422,863,462
- The integer number below the bar is called denominator: 900,000,000,117
- 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 = 779,422,863,462 ÷ 900,000,000,117
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:
779,422,863,462 = 2 × 3 × 129,903,810,577
779,422,863,462 is a composite number.
Written with exponents:
900,000,000,117 = 3 × 3 × 5,501 × 18,178,513 = 32 × 5,501 × 18,178,513
900,000,000,117 is a composite number.
779,422,863,462/900,000,000,117 =
(779,422,863,462 ÷ 3) / (900,000,000,117 ÷ 3) =
259,807,621,154/300,000,000,039
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.
779,422,863,462/900,000,000,117 =
(2 × 3 × 129,903,810,577)/(32 × 5,501 × 18,178,513) =
((2 × 3 × 129,903,810,577) ÷ 3) / ((32 × 5,501 × 18,178,513) ÷ 3) =
(2 × 129,903,810,577)/(3 × 5,501 × 18,178,513) =
259,807,621,154/300,000,000,039
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
259,807,621,154/300,000,000,039 =
259,807,621,154 ÷ 300,000,000,039 =
0.866025403734 ≈
0.87