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Finding the Fourth Proportional to 494,410.80, 743,171.40 and 485,079.60

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Solution

The fourth proportional to 494,410.80, 743,171.40 and 485,079.60 is: 729,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,410.80 : 743,171.40 = 485,079.60 : x
  2. Step 2: Convert to fraction form
    494,410.80/743,171.40 = 485,079.60/x
  3. Step 3: Cross multiply
    494,410.80x = 743,171.40 × 485,079.60
  4. Step 4: Simplify right side
    494,410.80x = 360,497,285,443.44
  5. Step 5: Solve for x
    x = 360,497,285,443.44/494,410.80
  6. Step 6: Final answer
    x = 729,145.25

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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.