Home / 687,511.11-1,031,294.63-327,496.89

Finding the Fourth Proportional to 687,511.11, 1,031,294.63 and 327,496.89

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Solution

The fourth proportional to 687,511.11, 1,031,294.63 and 327,496.89 is: 491,258.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,511.11 : 1,031,294.63 = 327,496.89 : x
  2. Step 2: Convert to fraction form
    687,511.11/1,031,294.63 = 327,496.89/x
  3. Step 3: Cross multiply
    687,511.11x = 1,031,294.63 × 327,496.89
  4. Step 4: Simplify right side
    687,511.11x = 337,745,782,361.22
  5. Step 5: Solve for x
    x = 337,745,782,361.22/687,511.11
  6. Step 6: Final answer
    x = 491,258.65

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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.