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Finding the Fourth Proportional to 494,433.60, 741,650.40 and 405,787.20

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Solution

The fourth proportional to 494,433.60, 741,650.40 and 405,787.20 is: 608,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,433.60 : 741,650.40 = 405,787.20 : x
  2. Step 2: Convert to fraction form
    494,433.60/741,650.40 = 405,787.20/x
  3. Step 3: Cross multiply
    494,433.60x = 741,650.40 × 405,787.20
  4. Step 4: Simplify right side
    494,433.60x = 300,952,239,194.88
  5. Step 5: Solve for x
    x = 300,952,239,194.88/494,433.60
  6. Step 6: Final answer
    x = 608,680.80

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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.