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Finding the Fourth Proportional to 494,854.20, 741,625.20 and 438,429.60

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Solution

The fourth proportional to 494,854.20, 741,625.20 and 438,429.60 is: 657,063.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,854.20 : 741,625.20 = 438,429.60 : x
  2. Step 2: Convert to fraction form
    494,854.20/741,625.20 = 438,429.60/x
  3. Step 3: Cross multiply
    494,854.20x = 741,625.20 × 438,429.60
  4. Step 4: Simplify right side
    494,854.20x = 325,150,439,785.92
  5. Step 5: Solve for x
    x = 325,150,439,785.92/494,854.20
  6. Step 6: Final answer
    x = 657,063.11

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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.