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Finding the Fourth Proportional to 494,906.80, 743,915.40 and 485,575.60

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Solution

The fourth proportional to 494,906.80, 743,915.40 and 485,575.60 is: 729,889.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,906.80 : 743,915.40 = 485,575.60 : x
  2. Step 2: Convert to fraction form
    494,906.80/743,915.40 = 485,575.60/x
  3. Step 3: Cross multiply
    494,906.80x = 743,915.40 × 485,575.60
  4. Step 4: Simplify right side
    494,906.80x = 361,227,166,704.24
  5. Step 5: Solve for x
    x = 361,227,166,704.24/494,906.80
  6. Step 6: Final answer
    x = 729,889.28

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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.