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Finding the Fourth Proportional to 886,375.20, 1,328,007.60 and 727,744.80

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Solution

The fourth proportional to 886,375.20, 1,328,007.60 and 727,744.80 is: 1,090,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,375.20 : 1,328,007.60 = 727,744.80 : x
  2. Step 2: Convert to fraction form
    886,375.20/1,328,007.60 = 727,744.80/x
  3. Step 3: Cross multiply
    886,375.20x = 1,328,007.60 × 727,744.80
  4. Step 4: Simplify right side
    886,375.20x = 966,450,625,260.48
  5. Step 5: Solve for x
    x = 966,450,625,260.48/886,375.20
  6. Step 6: Final answer
    x = 1,090,340.33

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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.