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Finding the Fourth Proportional to 814,398.92, 1,221,007.90 and 547,497.80

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Solution

The fourth proportional to 814,398.92, 1,221,007.90 and 547,497.80 is: 820,849.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,398.92 : 1,221,007.90 = 547,497.80 : x
  2. Step 2: Convert to fraction form
    814,398.92/1,221,007.90 = 547,497.80/x
  3. Step 3: Cross multiply
    814,398.92x = 1,221,007.90 × 547,497.80
  4. Step 4: Simplify right side
    814,398.92x = 668,499,139,032.62
  5. Step 5: Solve for x
    x = 668,499,139,032.62/814,398.92
  6. Step 6: Final answer
    x = 820,849.74

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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.