Home / 687,486.38-1,031,257.51-327,472.16

Finding the Fourth Proportional to 687,486.38, 1,031,257.51 and 327,472.16

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Solution

The fourth proportional to 687,486.38, 1,031,257.51 and 327,472.16 is: 491,221.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,486.38 : 1,031,257.51 = 327,472.16 : x
  2. Step 2: Convert to fraction form
    687,486.38/1,031,257.51 = 327,472.16/x
  3. Step 3: Cross multiply
    687,486.38x = 1,031,257.51 × 327,472.16
  4. Step 4: Simplify right side
    687,486.38x = 337,708,124,315.92
  5. Step 5: Solve for x
    x = 337,708,124,315.92/687,486.38
  6. Step 6: Final answer
    x = 491,221.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.