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Finding the Fourth Proportional to 498,445.62, 687,846.11 and 283,581.06

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Solution

The fourth proportional to 498,445.62, 687,846.11 and 283,581.06 is: 391,336.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,445.62 : 687,846.11 = 283,581.06 : x
  2. Step 2: Convert to fraction form
    498,445.62/687,846.11 = 283,581.06/x
  3. Step 3: Cross multiply
    498,445.62x = 687,846.11 × 283,581.06
  4. Step 4: Simplify right side
    498,445.62x = 195,060,127,572.77
  5. Step 5: Solve for x
    x = 195,060,127,572.77/498,445.62
  6. Step 6: Final answer
    x = 391,336.83

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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.