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Finding the Fourth Proportional to 409,080.20, 613,044.30 and 324,984.20

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Solution

The fourth proportional to 409,080.20, 613,044.30 and 324,984.20 is: 487,018.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,080.20 : 613,044.30 = 324,984.20 : x
  2. Step 2: Convert to fraction form
    409,080.20/613,044.30 = 324,984.20/x
  3. Step 3: Cross multiply
    409,080.20x = 613,044.30 × 324,984.20
  4. Step 4: Simplify right side
    409,080.20x = 199,229,711,400.06
  5. Step 5: Solve for x
    x = 199,229,711,400.06/409,080.20
  6. Step 6: Final answer
    x = 487,018.71

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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.