Finding the Fourth Proportional to 7,986,231,625.20, 11,979,347,437.80 and 2,090,779,465.20
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Solution
The fourth proportional to 7,986,231,625.20, 11,979,347,437.80 and 2,090,779,465.20 is: 3,136,169,197.80
Step by Step Solution
- Step 1: Write the proportion equation
7,986,231,625.20 : 11,979,347,437.80 = 2,090,779,465.20 : x - Step 2: Convert to fraction form
7,986,231,625.20/11,979,347,437.80 = 2,090,779,465.20/x - Step 3: Cross multiply
7,986,231,625.20x = 11,979,347,437.80 × 2,090,779,465.20 - Step 4: Simplify right side
7,986,231,625.20x = 25,046,173,629,448,474,624 - Step 5: Solve for x
x = 25,046,173,629,448,474,624/7,986,231,625.20 - Step 6: Final answer
x = 3,136,169,197.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.