Home / 439,780.20-659,670.30-327,805.80

Finding the Fourth Proportional to 439,780.20, 659,670.30 and 327,805.80

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Solution

The fourth proportional to 439,780.20, 659,670.30 and 327,805.80 is: 491,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,780.20 : 659,670.30 = 327,805.80 : x
  2. Step 2: Convert to fraction form
    439,780.20/659,670.30 = 327,805.80/x
  3. Step 3: Cross multiply
    439,780.20x = 659,670.30 × 327,805.80
  4. Step 4: Simplify right side
    439,780.20x = 216,243,750,427.74
  5. Step 5: Solve for x
    x = 216,243,750,427.74/439,780.20
  6. Step 6: Final answer
    x = 491,708.70

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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.