Finding the Fourth Proportional to 636,359,521.68, 878,074,957.42 and 357,847,258.68
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Solution
The fourth proportional to 636,359,521.68, 878,074,957.42 and 357,847,258.68 is: 493,772,318.51
Step by Step Solution
- Step 1: Write the proportion equation
636,359,521.68 : 878,074,957.42 = 357,847,258.68 : x - Step 2: Convert to fraction form
636,359,521.68/878,074,957.42 = 357,847,258.68/x - Step 3: Cross multiply
636,359,521.68x = 878,074,957.42 × 357,847,258.68 - Step 4: Simplify right side
636,359,521.68x = 314,216,716,428,304,704 - Step 5: Solve for x
x = 314,216,716,428,304,704/636,359,521.68 - Step 6: Final answer
x = 493,772,318.51
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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.