Home / 693,976.40-1,040,446.20-378,789.20

Finding the Fourth Proportional to 693,976.40, 1,040,446.20 and 378,789.20

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Solution

The fourth proportional to 693,976.40, 1,040,446.20 and 378,789.20 is: 567,900.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,976.40 : 1,040,446.20 = 378,789.20 : x
  2. Step 2: Convert to fraction form
    693,976.40/1,040,446.20 = 378,789.20/x
  3. Step 3: Cross multiply
    693,976.40x = 1,040,446.20 × 378,789.20
  4. Step 4: Simplify right side
    693,976.40x = 394,109,783,741.04
  5. Step 5: Solve for x
    x = 394,109,783,741.04/693,976.40
  6. Step 6: Final answer
    x = 567,900.84

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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.