Home / 451,618.80-677,542.10-318,758.55

Finding the Fourth Proportional to 451,618.80, 677,542.10 and 318,758.55

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Solution

The fourth proportional to 451,618.80, 677,542.10 and 318,758.55 is: 478,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,618.80 : 677,542.10 = 318,758.55 : x
  2. Step 2: Convert to fraction form
    451,618.80/677,542.10 = 318,758.55/x
  3. Step 3: Cross multiply
    451,618.80x = 677,542.10 × 318,758.55
  4. Step 4: Simplify right side
    451,618.80x = 215,972,337,359.96
  5. Step 5: Solve for x
    x = 215,972,337,359.96/451,618.80
  6. Step 6: Final answer
    x = 478,218.22

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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.