Finding the Fourth Proportional to 7,874,658.52, 11,812,972.76 and 3,081,728.68
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Solution
The fourth proportional to 7,874,658.52, 11,812,972.76 and 3,081,728.68 is: 4,622,978.49
Step by Step Solution
- Step 1: Write the proportion equation
7,874,658.52 : 11,812,972.76 = 3,081,728.68 : x - Step 2: Convert to fraction form
7,874,658.52/11,812,972.76 = 3,081,728.68/x - Step 3: Cross multiply
7,874,658.52x = 11,812,972.76 × 3,081,728.68 - Step 4: Simplify right side
7,874,658.52x = 36,404,376,950,550.76 - Step 5: Solve for x
x = 36,404,376,950,550.76/7,874,658.52 - Step 6: Final answer
x = 4,622,978.49
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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.