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Finding the Fourth Proportional to 1,332,135, 1,838,390.04 and 728,523

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Solution

The fourth proportional to 1,332,135, 1,838,390.04 and 728,523 is: 1,005,385.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,135 : 1,838,390.04 = 728,523 : x
  2. Step 2: Convert to fraction form
    1,332,135/1,838,390.04 = 728,523/x
  3. Step 3: Cross multiply
    1,332,135x = 1,838,390.04 × 728,523
  4. Step 4: Simplify right side
    1,332,135x = 1,339,309,427,110.92
  5. Step 5: Solve for x
    x = 1,339,309,427,110.92/1,332,135
  6. Step 6: Final answer
    x = 1,005,385.66

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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.