Finding the Fourth Proportional to 718,539.10, 1,078,517.76 and 381,578.79
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Solution
The fourth proportional to 718,539.10, 1,078,517.76 and 381,578.79 is: 572,744.76
Step by Step Solution
- Step 1: Write the proportion equation
718,539.10 : 1,078,517.76 = 381,578.79 : x - Step 2: Convert to fraction form
718,539.10/1,078,517.76 = 381,578.79/x - Step 3: Cross multiply
718,539.10x = 1,078,517.76 × 381,578.79 - Step 4: Simplify right side
718,539.10x = 411,539,501,854.31 - Step 5: Solve for x
x = 411,539,501,854.31/718,539.10 - Step 6: Final answer
x = 572,744.76
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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.