Home / 725,654.30-1,001,414.92-398,981.12

Finding the Fourth Proportional to 725,654.30, 1,001,414.92 and 398,981.12

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Solution

The fourth proportional to 725,654.30, 1,001,414.92 and 398,981.12 is: 550,600.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,654.30 : 1,001,414.92 = 398,981.12 : x
  2. Step 2: Convert to fraction form
    725,654.30/1,001,414.92 = 398,981.12/x
  3. Step 3: Cross multiply
    725,654.30x = 1,001,414.92 × 398,981.12
  4. Step 4: Simplify right side
    725,654.30x = 399,545,646,366.31
  5. Step 5: Solve for x
    x = 399,545,646,366.31/725,654.30
  6. Step 6: Final answer
    x = 550,600.54

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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.