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Finding the Fourth Proportional to 526,778.55, 726,956.31 and 285,061.10

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Solution

The fourth proportional to 526,778.55, 726,956.31 and 285,061.10 is: 393,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,778.55 : 726,956.31 = 285,061.10 : x
  2. Step 2: Convert to fraction form
    526,778.55/726,956.31 = 285,061.10/x
  3. Step 3: Cross multiply
    526,778.55x = 726,956.31 × 285,061.10
  4. Step 4: Simplify right side
    526,778.55x = 207,226,965,380.54
  5. Step 5: Solve for x
    x = 207,226,965,380.54/526,778.55
  6. Step 6: Final answer
    x = 393,385.35

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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.