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Finding the Fourth Proportional to 866,483.20, 1,299,724.80 and 656,531.20

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Solution

The fourth proportional to 866,483.20, 1,299,724.80 and 656,531.20 is: 984,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,483.20 : 1,299,724.80 = 656,531.20 : x
  2. Step 2: Convert to fraction form
    866,483.20/1,299,724.80 = 656,531.20/x
  3. Step 3: Cross multiply
    866,483.20x = 1,299,724.80 × 656,531.20
  4. Step 4: Simplify right side
    866,483.20x = 853,309,882,613.76
  5. Step 5: Solve for x
    x = 853,309,882,613.76/866,483.20
  6. Step 6: Final answer
    x = 984,796.80

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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.