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Finding the Fourth Proportional to 644,080.80, 966,121.20 and 616,778.40

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Solution

The fourth proportional to 644,080.80, 966,121.20 and 616,778.40 is: 925,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,080.80 : 966,121.20 = 616,778.40 : x
  2. Step 2: Convert to fraction form
    644,080.80/966,121.20 = 616,778.40/x
  3. Step 3: Cross multiply
    644,080.80x = 966,121.20 × 616,778.40
  4. Step 4: Simplify right side
    644,080.80x = 595,882,687,942.08
  5. Step 5: Solve for x
    x = 595,882,687,942.08/644,080.80
  6. Step 6: Final answer
    x = 925,167.60

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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.