Home / 687,288.43-948,463.19-381,366.01

Finding the Fourth Proportional to 687,288.43, 948,463.19 and 381,366.01

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Solution

The fourth proportional to 687,288.43, 948,463.19 and 381,366.01 is: 526,287.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,288.43 : 948,463.19 = 381,366.01 : x
  2. Step 2: Convert to fraction form
    687,288.43/948,463.19 = 381,366.01/x
  3. Step 3: Cross multiply
    687,288.43x = 948,463.19 × 381,366.01
  4. Step 4: Simplify right side
    687,288.43x = 361,711,622,402.17
  5. Step 5: Solve for x
    x = 361,711,622,402.17/687,288.43
  6. Step 6: Final answer
    x = 526,287.96

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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.