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Finding the Fourth Proportional to 486,021.40, 729,032.10 and 397,447.90

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Solution

The fourth proportional to 486,021.40, 729,032.10 and 397,447.90 is: 596,171.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,021.40 : 729,032.10 = 397,447.90 : x
  2. Step 2: Convert to fraction form
    486,021.40/729,032.10 = 397,447.90/x
  3. Step 3: Cross multiply
    486,021.40x = 729,032.10 × 397,447.90
  4. Step 4: Simplify right side
    486,021.40x = 289,752,277,177.59
  5. Step 5: Solve for x
    x = 289,752,277,177.59/486,021.40
  6. Step 6: Final answer
    x = 596,171.85

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Similar ratio
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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.