Home / 439,939.20-659,908.80-329,347.20

Finding the Fourth Proportional to 439,939.20, 659,908.80 and 329,347.20

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Solution

The fourth proportional to 439,939.20, 659,908.80 and 329,347.20 is: 494,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,939.20 : 659,908.80 = 329,347.20 : x
  2. Step 2: Convert to fraction form
    439,939.20/659,908.80 = 329,347.20/x
  3. Step 3: Cross multiply
    439,939.20x = 659,908.80 × 329,347.20
  4. Step 4: Simplify right side
    439,939.20x = 217,339,115,535.36
  5. Step 5: Solve for x
    x = 217,339,115,535.36/439,939.20
  6. Step 6: Final answer
    x = 494,020.80

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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.