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Finding the Fourth Proportional to 928,882, 1,392,157.32 and 502,400.80

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Solution

The fourth proportional to 928,882, 1,392,157.32 and 502,400.80 is: 752,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,882 : 1,392,157.32 = 502,400.80 : x
  2. Step 2: Convert to fraction form
    928,882/1,392,157.32 = 502,400.80/x
  3. Step 3: Cross multiply
    928,882x = 1,392,157.32 × 502,400.80
  4. Step 4: Simplify right side
    928,882x = 699,420,951,293.86
  5. Step 5: Solve for x
    x = 699,420,951,293.86/928,882
  6. Step 6: Final answer
    x = 752,970.72

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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.