Home / 648,034.82-972,216.25-198,778.54

Finding the Fourth Proportional to 648,034.82, 972,216.25 and 198,778.54

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Solution

The fourth proportional to 648,034.82, 972,216.25 and 198,778.54 is: 298,218.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,034.82 : 972,216.25 = 198,778.54 : x
  2. Step 2: Convert to fraction form
    648,034.82/972,216.25 = 198,778.54/x
  3. Step 3: Cross multiply
    648,034.82x = 972,216.25 × 198,778.54
  4. Step 4: Simplify right side
    648,034.82x = 193,255,726,739.28
  5. Step 5: Solve for x
    x = 193,255,726,739.28/648,034.82
  6. Step 6: Final answer
    x = 298,218.12

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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.