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Finding the Fourth Proportional to 715,108.46, 986,801.01 and 392,832.14

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Solution

The fourth proportional to 715,108.46, 986,801.01 and 392,832.14 is: 542,081.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,108.46 : 986,801.01 = 392,832.14 : x
  2. Step 2: Convert to fraction form
    715,108.46/986,801.01 = 392,832.14/x
  3. Step 3: Cross multiply
    715,108.46x = 986,801.01 × 392,832.14
  4. Step 4: Simplify right side
    715,108.46x = 387,647,152,512.46
  5. Step 5: Solve for x
    x = 387,647,152,512.46/715,108.46
  6. Step 6: Final answer
    x = 542,081.62

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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.