Finding the Fourth Proportional to 7,178,677.08, 9,906,691.17 and 3,915,490.98
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Solution
The fourth proportional to 7,178,677.08, 9,906,691.17 and 3,915,490.98 is: 5,403,441.26
Step by Step Solution
- Step 1: Write the proportion equation
7,178,677.08 : 9,906,691.17 = 3,915,490.98 : x - Step 2: Convert to fraction form
7,178,677.08/9,906,691.17 = 3,915,490.98/x - Step 3: Cross multiply
7,178,677.08x = 9,906,691.17 × 3,915,490.98 - Step 4: Simplify right side
7,178,677.08x = 38,789,559,917,780.65 - Step 5: Solve for x
x = 38,789,559,917,780.65/7,178,677.08 - Step 6: Final answer
x = 5,403,441.26
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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.