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Finding the Fourth Proportional to 499,166.31, 748,558.10 and 392,759.66

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Solution

The fourth proportional to 499,166.31, 748,558.10 and 392,759.66 is: 588,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,166.31 : 748,558.10 = 392,759.66 : x
  2. Step 2: Convert to fraction form
    499,166.31/748,558.10 = 392,759.66/x
  3. Step 3: Cross multiply
    499,166.31x = 748,558.10 × 392,759.66
  4. Step 4: Simplify right side
    499,166.31x = 294,003,419,139.66
  5. Step 5: Solve for x
    x = 294,003,419,139.66/499,166.31
  6. Step 6: Final answer
    x = 588,988.91

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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.