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Finding the Fourth Proportional to 494,422.80, 741,634.20 and 120,445.80

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Solution

The fourth proportional to 494,422.80, 741,634.20 and 120,445.80 is: 180,668.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,422.80 : 741,634.20 = 120,445.80 : x
  2. Step 2: Convert to fraction form
    494,422.80/741,634.20 = 120,445.80/x
  3. Step 3: Cross multiply
    494,422.80x = 741,634.20 × 120,445.80
  4. Step 4: Simplify right side
    494,422.80x = 89,326,724,526.36
  5. Step 5: Solve for x
    x = 89,326,724,526.36/494,422.80
  6. Step 6: Final answer
    x = 180,668.70

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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.