Home / 423,736.20-635,604.30-394,211.70

Finding the Fourth Proportional to 423,736.20, 635,604.30 and 394,211.70

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Solution

The fourth proportional to 423,736.20, 635,604.30 and 394,211.70 is: 591,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,736.20 : 635,604.30 = 394,211.70 : x
  2. Step 2: Convert to fraction form
    423,736.20/635,604.30 = 394,211.70/x
  3. Step 3: Cross multiply
    423,736.20x = 635,604.30 × 394,211.70
  4. Step 4: Simplify right side
    423,736.20x = 250,562,651,630.31
  5. Step 5: Solve for x
    x = 250,562,651,630.31/423,736.20
  6. Step 6: Final answer
    x = 591,317.55

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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.