Home / 687,522.94-1,031,312.05-327,508.72

Finding the Fourth Proportional to 687,522.94, 1,031,312.05 and 327,508.72

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Solution

The fourth proportional to 687,522.94, 1,031,312.05 and 327,508.72 is: 491,276.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,522.94 : 1,031,312.05 = 327,508.72 : x
  2. Step 2: Convert to fraction form
    687,522.94/1,031,312.05 = 327,508.72/x
  3. Step 3: Cross multiply
    687,522.94x = 1,031,312.05 × 327,508.72
  4. Step 4: Simplify right side
    687,522.94x = 337,763,686,019.02
  5. Step 5: Solve for x
    x = 337,763,686,019.02/687,522.94
  6. Step 6: Final answer
    x = 491,276.24

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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.