Home / 494,920.80-743,936.40-485,589.60

Finding the Fourth Proportional to 494,920.80, 743,936.40 and 485,589.60

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Solution

The fourth proportional to 494,920.80, 743,936.40 and 485,589.60 is: 729,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,920.80 : 743,936.40 = 485,589.60 : x
  2. Step 2: Convert to fraction form
    494,920.80/743,936.40 = 485,589.60/x
  3. Step 3: Cross multiply
    494,920.80x = 743,936.40 × 485,589.60
  4. Step 4: Simplify right side
    494,920.80x = 361,247,778,901.44
  5. Step 5: Solve for x
    x = 361,247,778,901.44/494,920.80
  6. Step 6: Final answer
    x = 729,910.28

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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.