Home / 457,252.20-685,878.30-394,266.60

Finding the Fourth Proportional to 457,252.20, 685,878.30 and 394,266.60

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Solution

The fourth proportional to 457,252.20, 685,878.30 and 394,266.60 is: 591,399.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,252.20 : 685,878.30 = 394,266.60 : x
  2. Step 2: Convert to fraction form
    457,252.20/685,878.30 = 394,266.60/x
  3. Step 3: Cross multiply
    457,252.20x = 685,878.30 × 394,266.60
  4. Step 4: Simplify right side
    457,252.20x = 270,418,905,354.78
  5. Step 5: Solve for x
    x = 270,418,905,354.78/457,252.20
  6. Step 6: Final answer
    x = 591,399.90

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1.5x scale

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.