Home / 720,972.73-994,948.82-398,704.51

Finding the Fourth Proportional to 720,972.73, 994,948.82 and 398,704.51

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Solution

The fourth proportional to 720,972.73, 994,948.82 and 398,704.51 is: 550,215.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,972.73 : 994,948.82 = 398,704.51 : x
  2. Step 2: Convert to fraction form
    720,972.73/994,948.82 = 398,704.51/x
  3. Step 3: Cross multiply
    720,972.73x = 994,948.82 × 398,704.51
  4. Step 4: Simplify right side
    720,972.73x = 396,690,581,753.18
  5. Step 5: Solve for x
    x = 396,690,581,753.18/720,972.73
  6. Step 6: Final answer
    x = 550,215.79

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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.