Home / 439,619.20-659,428.80-329,027.20

Finding the Fourth Proportional to 439,619.20, 659,428.80 and 329,027.20

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Solution

The fourth proportional to 439,619.20, 659,428.80 and 329,027.20 is: 493,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,619.20 : 659,428.80 = 329,027.20 : x
  2. Step 2: Convert to fraction form
    439,619.20/659,428.80 = 329,027.20/x
  3. Step 3: Cross multiply
    439,619.20x = 659,428.80 × 329,027.20
  4. Step 4: Simplify right side
    439,619.20x = 216,970,011,663.36
  5. Step 5: Solve for x
    x = 216,970,011,663.36/439,619.20
  6. Step 6: Final answer
    x = 493,540.80

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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.