Home / 687,508.11-1,031,290.13-327,493.89

Finding the Fourth Proportional to 687,508.11, 1,031,290.13 and 327,493.89

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Solution

The fourth proportional to 687,508.11, 1,031,290.13 and 327,493.89 is: 491,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,508.11 : 1,031,290.13 = 327,493.89 : x
  2. Step 2: Convert to fraction form
    687,508.11/1,031,290.13 = 327,493.89/x
  3. Step 3: Cross multiply
    687,508.11x = 1,031,290.13 × 327,493.89
  4. Step 4: Simplify right side
    687,508.11x = 337,741,214,754.84
  5. Step 5: Solve for x
    x = 337,741,214,754.84/687,508.11
  6. Step 6: Final answer
    x = 491,254.15

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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.