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Finding the Fourth Proportional to 497,769.60, 746,654.40 and 339,139.20

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Solution

The fourth proportional to 497,769.60, 746,654.40 and 339,139.20 is: 508,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,769.60 : 746,654.40 = 339,139.20 : x
  2. Step 2: Convert to fraction form
    497,769.60/746,654.40 = 339,139.20/x
  3. Step 3: Cross multiply
    497,769.60x = 746,654.40 × 339,139.20
  4. Step 4: Simplify right side
    497,769.60x = 253,219,775,892.48
  5. Step 5: Solve for x
    x = 253,219,775,892.48/497,769.60
  6. Step 6: Final answer
    x = 508,708.80

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Similar ratio
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1.5x scale

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.