Finding the Fourth Proportional to 990,863.70, 1,367,398.90 and 538,154.70
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Solution
The fourth proportional to 990,863.70, 1,367,398.90 and 538,154.70 is: 742,657.28
Step by Step Solution
- Step 1: Write the proportion equation
990,863.70 : 1,367,398.90 = 538,154.70 : x - Step 2: Convert to fraction form
990,863.70/1,367,398.90 = 538,154.70/x - Step 3: Cross multiply
990,863.70x = 1,367,398.90 × 538,154.70 - Step 4: Simplify right side
990,863.70x = 735,872,144,809.83 - Step 5: Solve for x
x = 735,872,144,809.83/990,863.70 - Step 6: Final answer
x = 742,657.28
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.