Home / 979,481.20-1,469,221.80-662,220.40

Finding the Fourth Proportional to 979,481.20, 1,469,221.80 and 662,220.40

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Solution

The fourth proportional to 979,481.20, 1,469,221.80 and 662,220.40 is: 993,330.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,481.20 : 1,469,221.80 = 662,220.40 : x
  2. Step 2: Convert to fraction form
    979,481.20/1,469,221.80 = 662,220.40/x
  3. Step 3: Cross multiply
    979,481.20x = 1,469,221.80 × 662,220.40
  4. Step 4: Simplify right side
    979,481.20x = 972,948,648,084.72
  5. Step 5: Solve for x
    x = 972,948,648,084.72/979,481.20
  6. Step 6: Final answer
    x = 993,330.60

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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.