Home / 643,399.20-964,442.70-377,022.60

Finding the Fourth Proportional to 643,399.20, 964,442.70 and 377,022.60

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Solution

The fourth proportional to 643,399.20, 964,442.70 and 377,022.60 is: 565,149.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,399.20 : 964,442.70 = 377,022.60 : x
  2. Step 2: Convert to fraction form
    643,399.20/964,442.70 = 377,022.60/x
  3. Step 3: Cross multiply
    643,399.20x = 964,442.70 × 377,022.60
  4. Step 4: Simplify right side
    643,399.20x = 363,616,694,305.02
  5. Step 5: Solve for x
    x = 363,616,694,305.02/643,399.20
  6. Step 6: Final answer
    x = 565,149.43

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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.