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Finding the Fourth Proportional to 868,168.80, 1,302,253.20 and 728,200.80

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Solution

The fourth proportional to 868,168.80, 1,302,253.20 and 728,200.80 is: 1,092,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,168.80 : 1,302,253.20 = 728,200.80 : x
  2. Step 2: Convert to fraction form
    868,168.80/1,302,253.20 = 728,200.80/x
  3. Step 3: Cross multiply
    868,168.80x = 1,302,253.20 × 728,200.80
  4. Step 4: Simplify right side
    868,168.80x = 948,301,822,042.56
  5. Step 5: Solve for x
    x = 948,301,822,042.56/868,168.80
  6. Step 6: Final answer
    x = 1,092,301.20

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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.