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Finding the Fourth Proportional to 992,498, 1,369,648.86 and 539,789

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Solution

The fourth proportional to 992,498, 1,369,648.86 and 539,789 is: 744,909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,498 : 1,369,648.86 = 539,789 : x
  2. Step 2: Convert to fraction form
    992,498/1,369,648.86 = 539,789/x
  3. Step 3: Cross multiply
    992,498x = 1,369,648.86 × 539,789
  4. Step 4: Simplify right side
    992,498x = 739,321,388,490.54
  5. Step 5: Solve for x
    x = 739,321,388,490.54/992,498
  6. Step 6: Final answer
    x = 744,909.70

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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.