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Finding the Fourth Proportional to 977,287.20, 1,466,125.20 and 820,600.80

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Solution

The fourth proportional to 977,287.20, 1,466,125.20 and 820,600.80 is: 1,231,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,287.20 : 1,466,125.20 = 820,600.80 : x
  2. Step 2: Convert to fraction form
    977,287.20/1,466,125.20 = 820,600.80/x
  3. Step 3: Cross multiply
    977,287.20x = 1,466,125.20 × 820,600.80
  4. Step 4: Simplify right side
    977,287.20x = 1,203,103,512,020.16
  5. Step 5: Solve for x
    x = 1,203,103,512,020.16/977,287.20
  6. Step 6: Final answer
    x = 1,231,064.43

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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.