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Finding the Fourth Proportional to 439,776.20, 659,664.30 and 327,801.80

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Solution

The fourth proportional to 439,776.20, 659,664.30 and 327,801.80 is: 491,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,776.20 : 659,664.30 = 327,801.80 : x
  2. Step 2: Convert to fraction form
    439,776.20/659,664.30 = 327,801.80/x
  3. Step 3: Cross multiply
    439,776.20x = 659,664.30 × 327,801.80
  4. Step 4: Simplify right side
    439,776.20x = 216,239,144,935.74
  5. Step 5: Solve for x
    x = 216,239,144,935.74/439,776.20
  6. Step 6: Final answer
    x = 491,702.70

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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.