Home / 979,408.20-1,469,112.30-269,435.10

Finding the Fourth Proportional to 979,408.20, 1,469,112.30 and 269,435.10

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Solution

The fourth proportional to 979,408.20, 1,469,112.30 and 269,435.10 is: 404,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,408.20 : 1,469,112.30 = 269,435.10 : x
  2. Step 2: Convert to fraction form
    979,408.20/1,469,112.30 = 269,435.10/x
  3. Step 3: Cross multiply
    979,408.20x = 1,469,112.30 × 269,435.10
  4. Step 4: Simplify right side
    979,408.20x = 395,830,419,461.73
  5. Step 5: Solve for x
    x = 395,830,419,461.73/979,408.20
  6. Step 6: Final answer
    x = 404,152.65

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Double scale
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Similar ratio
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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.