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Finding the Fourth Proportional to 682,991.68, 942,847.44 and 396,456.61

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Solution

The fourth proportional to 682,991.68, 942,847.44 and 396,456.61 is: 547,295.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,991.68 : 942,847.44 = 396,456.61 : x
  2. Step 2: Convert to fraction form
    682,991.68/942,847.44 = 396,456.61/x
  3. Step 3: Cross multiply
    682,991.68x = 942,847.44 × 396,456.61
  4. Step 4: Simplify right side
    682,991.68x = 373,798,097,452.46
  5. Step 5: Solve for x
    x = 373,798,097,452.46/682,991.68
  6. Step 6: Final answer
    x = 547,295.24

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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.