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Finding the Fourth Proportional to 497,279.60, 744,169.80 and 455,289.20

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Solution

The fourth proportional to 497,279.60, 744,169.80 and 455,289.20 is: 681,331.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,279.60 : 744,169.80 = 455,289.20 : x
  2. Step 2: Convert to fraction form
    497,279.60/744,169.80 = 455,289.20/x
  3. Step 3: Cross multiply
    497,279.60x = 744,169.80 × 455,289.20
  4. Step 4: Simplify right side
    497,279.60x = 338,812,472,906.16
  5. Step 5: Solve for x
    x = 338,812,472,906.16/497,279.60
  6. Step 6: Final answer
    x = 681,331.94

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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.