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Finding the Fourth Proportional to 681,879.92, 1,022,820.60 and 368,330.48

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Solution

The fourth proportional to 681,879.92, 1,022,820.60 and 368,330.48 is: 552,496.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,879.92 : 1,022,820.60 = 368,330.48 : x
  2. Step 2: Convert to fraction form
    681,879.92/1,022,820.60 = 368,330.48/x
  3. Step 3: Cross multiply
    681,879.92x = 1,022,820.60 × 368,330.48
  4. Step 4: Simplify right side
    681,879.92x = 376,736,002,551.89
  5. Step 5: Solve for x
    x = 376,736,002,551.89/681,879.92
  6. Step 6: Final answer
    x = 552,496.11

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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.