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Finding the Fourth Proportional to 681,348.28, 940,052.48 and 394,813

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Solution

The fourth proportional to 681,348.28, 940,052.48 and 394,813 is: 544,721.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,348.28 : 940,052.48 = 394,813 : x
  2. Step 2: Convert to fraction form
    681,348.28/940,052.48 = 394,813/x
  3. Step 3: Cross multiply
    681,348.28x = 940,052.48 × 394,813
  4. Step 4: Simplify right side
    681,348.28x = 371,144,939,786.24
  5. Step 5: Solve for x
    x = 371,144,939,786.24/681,348.28
  6. Step 6: Final answer
    x = 544,721.33

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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.