Home / 723,904.41-998,987.70-397,219.56

Finding the Fourth Proportional to 723,904.41, 998,987.70 and 397,219.56

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Solution

The fourth proportional to 723,904.41, 998,987.70 and 397,219.56 is: 548,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,904.41 : 998,987.70 = 397,219.56 : x
  2. Step 2: Convert to fraction form
    723,904.41/998,987.70 = 397,219.56/x
  3. Step 3: Cross multiply
    723,904.41x = 998,987.70 × 397,219.56
  4. Step 4: Simplify right side
    723,904.41x = 396,817,454,639.41
  5. Step 5: Solve for x
    x = 396,817,454,639.41/723,904.41
  6. Step 6: Final answer
    x = 548,162.78

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Double scale
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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.