Home / 425,976.26-638,855.03-126,385.95

Finding the Fourth Proportional to 425,976.26, 638,855.03 and 126,385.95

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Solution

The fourth proportional to 425,976.26, 638,855.03 and 126,385.95 is: 189,546.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,976.26 : 638,855.03 = 126,385.95 : x
  2. Step 2: Convert to fraction form
    425,976.26/638,855.03 = 126,385.95/x
  3. Step 3: Cross multiply
    425,976.26x = 638,855.03 × 126,385.95
  4. Step 4: Simplify right side
    425,976.26x = 80,742,299,246.90
  5. Step 5: Solve for x
    x = 80,742,299,246.90/425,976.26
  6. Step 6: Final answer
    x = 189,546.48

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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.