Home / 687,229.04-948,489.85-381,403.65

Finding the Fourth Proportional to 687,229.04, 948,489.85 and 381,403.65

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Solution

The fourth proportional to 687,229.04, 948,489.85 and 381,403.65 is: 526,400.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,229.04 : 948,489.85 = 381,403.65 : x
  2. Step 2: Convert to fraction form
    687,229.04/948,489.85 = 381,403.65/x
  3. Step 3: Cross multiply
    687,229.04x = 948,489.85 × 381,403.65
  4. Step 4: Simplify right side
    687,229.04x = 361,757,494,811.54
  5. Step 5: Solve for x
    x = 361,757,494,811.54/687,229.04
  6. Step 6: Final answer
    x = 526,400.18

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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.