Home / 644,622.40-966,127.20-329,204.80

Finding the Fourth Proportional to 644,622.40, 966,127.20 and 329,204.80

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Solution

The fourth proportional to 644,622.40, 966,127.20 and 329,204.80 is: 493,395.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,622.40 : 966,127.20 = 329,204.80 : x
  2. Step 2: Convert to fraction form
    644,622.40/966,127.20 = 329,204.80/x
  3. Step 3: Cross multiply
    644,622.40x = 966,127.20 × 329,204.80
  4. Step 4: Simplify right side
    644,622.40x = 318,053,711,650.56
  5. Step 5: Solve for x
    x = 318,053,711,650.56/644,622.40
  6. Step 6: Final answer
    x = 493,395.38

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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.