Home / 687,517.12-1,031,303.62-327,502.88

Finding the Fourth Proportional to 687,517.12, 1,031,303.62 and 327,502.88

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Solution

The fourth proportional to 687,517.12, 1,031,303.62 and 327,502.88 is: 491,267.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,517.12 : 1,031,303.62 = 327,502.88 : x
  2. Step 2: Convert to fraction form
    687,517.12/1,031,303.62 = 327,502.88/x
  3. Step 3: Cross multiply
    687,517.12x = 1,031,303.62 × 327,502.88
  4. Step 4: Simplify right side
    687,517.12x = 337,754,905,704.43
  5. Step 5: Solve for x
    x = 337,754,905,704.43/687,517.12
  6. Step 6: Final answer
    x = 491,267.63

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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.