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Finding the Fourth Proportional to 1,332,288, 1,838,557.44 and 728,676

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Solution

The fourth proportional to 1,332,288, 1,838,557.44 and 728,676 is: 1,005,572.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,288 : 1,838,557.44 = 728,676 : x
  2. Step 2: Convert to fraction form
    1,332,288/1,838,557.44 = 728,676/x
  3. Step 3: Cross multiply
    1,332,288x = 1,838,557.44 × 728,676
  4. Step 4: Simplify right side
    1,332,288x = 1,339,712,681,149.44
  5. Step 5: Solve for x
    x = 1,339,712,681,149.44/1,332,288
  6. Step 6: Final answer
    x = 1,005,572.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.