Home / 681,157.48-939,997.38-394,843.72

Finding the Fourth Proportional to 681,157.48, 939,997.38 and 394,843.72

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Solution

The fourth proportional to 681,157.48, 939,997.38 and 394,843.72 is: 544,884.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,157.48 : 939,997.38 = 394,843.72 : x
  2. Step 2: Convert to fraction form
    681,157.48/939,997.38 = 394,843.72/x
  3. Step 3: Cross multiply
    681,157.48x = 939,997.38 × 394,843.72
  4. Step 4: Simplify right side
    681,157.48x = 371,152,062,309.45
  5. Step 5: Solve for x
    x = 371,152,062,309.45/681,157.48
  6. Step 6: Final answer
    x = 544,884.37

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1.5x scale

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.