Home / 694,138.08-1,040,018.85-378,816.42

Finding the Fourth Proportional to 694,138.08, 1,040,018.85 and 378,816.42

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Solution

The fourth proportional to 694,138.08, 1,040,018.85 and 378,816.42 is: 567,576.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,138.08 : 1,040,018.85 = 378,816.42 : x
  2. Step 2: Convert to fraction form
    694,138.08/1,040,018.85 = 378,816.42/x
  3. Step 3: Cross multiply
    694,138.08x = 1,040,018.85 × 378,816.42
  4. Step 4: Simplify right side
    694,138.08x = 393,976,217,489.52
  5. Step 5: Solve for x
    x = 393,976,217,489.52/694,138.08
  6. Step 6: Final answer
    x = 567,576.15

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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.