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Finding the Fourth Proportional to 439,774.20, 659,661.30 and 327,799.80

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Solution

The fourth proportional to 439,774.20, 659,661.30 and 327,799.80 is: 491,699.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,774.20 : 659,661.30 = 327,799.80 : x
  2. Step 2: Convert to fraction form
    439,774.20/659,661.30 = 327,799.80/x
  3. Step 3: Cross multiply
    439,774.20x = 659,661.30 × 327,799.80
  4. Step 4: Simplify right side
    439,774.20x = 216,236,842,207.74
  5. Step 5: Solve for x
    x = 216,236,842,207.74/439,774.20
  6. Step 6: Final answer
    x = 491,699.70

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Similar ratio
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1.5x scale

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.