Home / 693,919.20-1,040,456.40-272,690.40

Finding the Fourth Proportional to 693,919.20, 1,040,456.40 and 272,690.40

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Solution

The fourth proportional to 693,919.20, 1,040,456.40 and 272,690.40 is: 408,869.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,919.20 : 1,040,456.40 = 272,690.40 : x
  2. Step 2: Convert to fraction form
    693,919.20/1,040,456.40 = 272,690.40/x
  3. Step 3: Cross multiply
    693,919.20x = 1,040,456.40 × 272,690.40
  4. Step 4: Simplify right side
    693,919.20x = 283,722,471,898.56
  5. Step 5: Solve for x
    x = 283,722,471,898.56/693,919.20
  6. Step 6: Final answer
    x = 408,869.61

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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.