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Finding the Fourth Proportional to 448,675.20, 672,105.60 and 279,676.80

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Solution

The fourth proportional to 448,675.20, 672,105.60 and 279,676.80 is: 418,949.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,675.20 : 672,105.60 = 279,676.80 : x
  2. Step 2: Convert to fraction form
    448,675.20/672,105.60 = 279,676.80/x
  3. Step 3: Cross multiply
    448,675.20x = 672,105.60 × 279,676.80
  4. Step 4: Simplify right side
    448,675.20x = 187,972,343,470.08
  5. Step 5: Solve for x
    x = 187,972,343,470.08/448,675.20
  6. Step 6: Final answer
    x = 418,949.71

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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.