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Finding the Fourth Proportional to 639,423.38, 959,058.52 and 497,410.54

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Solution

The fourth proportional to 639,423.38, 959,058.52 and 497,410.54 is: 746,056.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,423.38 : 959,058.52 = 497,410.54 : x
  2. Step 2: Convert to fraction form
    639,423.38/959,058.52 = 497,410.54/x
  3. Step 3: Cross multiply
    639,423.38x = 959,058.52 × 497,410.54
  4. Step 4: Simplify right side
    639,423.38x = 477,045,816,324.80
  5. Step 5: Solve for x
    x = 477,045,816,324.80/639,423.38
  6. Step 6: Final answer
    x = 746,056.26

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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.