Finding the Fourth Proportional to 636,359,517.68, 878,074,951.91 and 357,847,254.68
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Solution
The fourth proportional to 636,359,517.68, 878,074,951.91 and 357,847,254.68 is: 493,772,312.99
Step by Step Solution
- Step 1: Write the proportion equation
636,359,517.68 : 878,074,951.91 = 357,847,254.68 : x - Step 2: Convert to fraction form
636,359,517.68/878,074,951.91 = 357,847,254.68/x - Step 3: Cross multiply
636,359,517.68x = 878,074,951.91 × 357,847,254.68 - Step 4: Simplify right side
636,359,517.68x = 314,216,710,938,086,912 - Step 5: Solve for x
x = 314,216,710,938,086,912/636,359,517.68 - Step 6: Final answer
x = 493,772,312.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.