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Finding the Fourth Proportional to 694,160.88, 1,040,978.52 and 378,445.92

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Solution

The fourth proportional to 694,160.88, 1,040,978.52 and 378,445.92 is: 567,525.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,160.88 : 1,040,978.52 = 378,445.92 : x
  2. Step 2: Convert to fraction form
    694,160.88/1,040,978.52 = 378,445.92/x
  3. Step 3: Cross multiply
    694,160.88x = 1,040,978.52 × 378,445.92
  4. Step 4: Simplify right side
    694,160.88x = 393,954,073,701.64
  5. Step 5: Solve for x
    x = 393,954,073,701.64/694,160.88
  6. Step 6: Final answer
    x = 567,525.61

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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.