Home / 681,399.29-940,331.04-395,085.45

Finding the Fourth Proportional to 681,399.29, 940,331.04 and 395,085.45

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Solution

The fourth proportional to 681,399.29, 940,331.04 and 395,085.45 is: 545,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,399.29 : 940,331.04 = 395,085.45 : x
  2. Step 2: Convert to fraction form
    681,399.29/940,331.04 = 395,085.45/x
  3. Step 3: Cross multiply
    681,399.29x = 940,331.04 × 395,085.45
  4. Step 4: Simplify right side
    681,399.29x = 371,511,112,087.37
  5. Step 5: Solve for x
    x = 371,511,112,087.37/681,399.29
  6. Step 6: Final answer
    x = 545,217.94

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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.