Home / 693,980.40-1,040,452.20-378,793.20

Finding the Fourth Proportional to 693,980.40, 1,040,452.20 and 378,793.20

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Solution

The fourth proportional to 693,980.40, 1,040,452.20 and 378,793.20 is: 567,906.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,980.40 : 1,040,452.20 = 378,793.20 : x
  2. Step 2: Convert to fraction form
    693,980.40/1,040,452.20 = 378,793.20/x
  3. Step 3: Cross multiply
    693,980.40x = 1,040,452.20 × 378,793.20
  4. Step 4: Simplify right side
    693,980.40x = 394,116,218,285.04
  5. Step 5: Solve for x
    x = 394,116,218,285.04/693,980.40
  6. Step 6: Final answer
    x = 567,906.84

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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.