Home / 693,685.20-1,040,105.40-272,456.40

Finding the Fourth Proportional to 693,685.20, 1,040,105.40 and 272,456.40

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Solution

The fourth proportional to 693,685.20, 1,040,105.40 and 272,456.40 is: 408,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,685.20 : 1,040,105.40 = 272,456.40 : x
  2. Step 2: Convert to fraction form
    693,685.20/1,040,105.40 = 272,456.40/x
  3. Step 3: Cross multiply
    693,685.20x = 1,040,105.40 × 272,456.40
  4. Step 4: Simplify right side
    693,685.20x = 283,383,372,904.56
  5. Step 5: Solve for x
    x = 283,383,372,904.56/693,685.20
  6. Step 6: Final answer
    x = 408,518.70

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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.