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Finding the Fourth Proportional to 656,687.92, 906,229.80 and 354,881.92

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Solution

The fourth proportional to 656,687.92, 906,229.80 and 354,881.92 is: 489,737.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,687.92 : 906,229.80 = 354,881.92 : x
  2. Step 2: Convert to fraction form
    656,687.92/906,229.80 = 354,881.92/x
  3. Step 3: Cross multiply
    656,687.92x = 906,229.80 × 354,881.92
  4. Step 4: Simplify right side
    656,687.92x = 321,604,571,385.22
  5. Step 5: Solve for x
    x = 321,604,571,385.22/656,687.92
  6. Step 6: Final answer
    x = 489,737.30

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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.