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Finding the Fourth Proportional to 494,612.40, 741,918.60 and 120,635.40

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Solution

The fourth proportional to 494,612.40, 741,918.60 and 120,635.40 is: 180,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,612.40 : 741,918.60 = 120,635.40 : x
  2. Step 2: Convert to fraction form
    494,612.40/741,918.60 = 120,635.40/x
  3. Step 3: Cross multiply
    494,612.40x = 741,918.60 × 120,635.40
  4. Step 4: Simplify right side
    494,612.40x = 89,501,647,078.44
  5. Step 5: Solve for x
    x = 89,501,647,078.44/494,612.40
  6. Step 6: Final answer
    x = 180,953.10

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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.