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Finding the Fourth Proportional to 656,691.92, 906,235.32 and 354,885.92

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Solution

The fourth proportional to 656,691.92, 906,235.32 and 354,885.92 is: 489,742.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,691.92 : 906,235.32 = 354,885.92 : x
  2. Step 2: Convert to fraction form
    656,691.92/906,235.32 = 354,885.92/x
  3. Step 3: Cross multiply
    656,691.92x = 906,235.32 × 354,885.92
  4. Step 4: Simplify right side
    656,691.92x = 321,610,155,274.69
  5. Step 5: Solve for x
    x = 321,610,155,274.69/656,691.92
  6. Step 6: Final answer
    x = 489,742.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.