Home / 693,500.40-1,040,542.20-378,183.60

Finding the Fourth Proportional to 693,500.40, 1,040,542.20 and 378,183.60

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Solution

The fourth proportional to 693,500.40, 1,040,542.20 and 378,183.60 is: 567,434.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,500.40 : 1,040,542.20 = 378,183.60 : x
  2. Step 2: Convert to fraction form
    693,500.40/1,040,542.20 = 378,183.60/x
  3. Step 3: Cross multiply
    693,500.40x = 1,040,542.20 × 378,183.60
  4. Step 4: Simplify right side
    693,500.40x = 393,515,995,147.92
  5. Step 5: Solve for x
    x = 393,515,995,147.92/693,500.40
  6. Step 6: Final answer
    x = 567,434.42

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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.