Home / 715,240.13-987,042.31-392,956.52

Finding the Fourth Proportional to 715,240.13, 987,042.31 and 392,956.52

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Solution

The fourth proportional to 715,240.13, 987,042.31 and 392,956.52 is: 542,286.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,240.13 : 987,042.31 = 392,956.52 : x
  2. Step 2: Convert to fraction form
    715,240.13/987,042.31 = 392,956.52/x
  3. Step 3: Cross multiply
    715,240.13x = 987,042.31 × 392,956.52
  4. Step 4: Simplify right side
    715,240.13x = 387,864,705,312.76
  5. Step 5: Solve for x
    x = 387,864,705,312.76/715,240.13
  6. Step 6: Final answer
    x = 542,286.00

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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.