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Finding the Fourth Proportional to 1,329,332, 1,834,468.76 and 725,720

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Solution

The fourth proportional to 1,329,332, 1,834,468.76 and 725,720 is: 1,001,488.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,332 : 1,834,468.76 = 725,720 : x
  2. Step 2: Convert to fraction form
    1,329,332/1,834,468.76 = 725,720/x
  3. Step 3: Cross multiply
    1,329,332x = 1,834,468.76 × 725,720
  4. Step 4: Simplify right side
    1,329,332x = 1,331,310,668,507.20
  5. Step 5: Solve for x
    x = 1,331,310,668,507.20/1,329,332
  6. Step 6: Final answer
    x = 1,001,488.47

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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.