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Finding the Fourth Proportional to 449,785.48, 674,132.56 and 330,349.28

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Solution

The fourth proportional to 449,785.48, 674,132.56 and 330,349.28 is: 495,123.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,785.48 : 674,132.56 = 330,349.28 : x
  2. Step 2: Convert to fraction form
    449,785.48/674,132.56 = 330,349.28/x
  3. Step 3: Cross multiply
    449,785.48x = 674,132.56 × 330,349.28
  4. Step 4: Simplify right side
    449,785.48x = 222,699,205,820.56
  5. Step 5: Solve for x
    x = 222,699,205,820.56/449,785.48
  6. Step 6: Final answer
    x = 495,123.15

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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.