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Finding the Fourth Proportional to 656,660.89, 906,192.03 and 354,854.89

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Solution

The fourth proportional to 656,660.89, 906,192.03 and 354,854.89 is: 489,699.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,660.89 : 906,192.03 = 354,854.89 : x
  2. Step 2: Convert to fraction form
    656,660.89/906,192.03 = 354,854.89/x
  3. Step 3: Cross multiply
    656,660.89x = 906,192.03 × 354,854.89
  4. Step 4: Simplify right side
    656,660.89x = 321,566,673,124.53
  5. Step 5: Solve for x
    x = 321,566,673,124.53/656,660.89
  6. Step 6: Final answer
    x = 489,699.75

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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.