Home / 1,188,617.26-1,639,892.91-678,958.78

Finding the Fourth Proportional to 1,188,617.26, 1,639,892.91 and 678,958.78

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Solution

The fourth proportional to 1,188,617.26, 1,639,892.91 and 678,958.78 is: 936,735.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,617.26 : 1,639,892.91 = 678,958.78 : x
  2. Step 2: Convert to fraction form
    1,188,617.26/1,639,892.91 = 678,958.78/x
  3. Step 3: Cross multiply
    1,188,617.26x = 1,639,892.91 × 678,958.78
  4. Step 4: Simplify right side
    1,188,617.26x = 1,113,419,689,504.25
  5. Step 5: Solve for x
    x = 1,113,419,689,504.25/1,188,617.26
  6. Step 6: Final answer
    x = 936,735.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.