Home / 647,945.40-972,104.63-198,732.18

Finding the Fourth Proportional to 647,945.40, 972,104.63 and 198,732.18

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Solution

The fourth proportional to 647,945.40, 972,104.63 and 198,732.18 is: 298,155.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,945.40 : 972,104.63 = 198,732.18 : x
  2. Step 2: Convert to fraction form
    647,945.40/972,104.63 = 198,732.18/x
  3. Step 3: Cross multiply
    647,945.40x = 972,104.63 × 198,732.18
  4. Step 4: Simplify right side
    647,945.40x = 193,188,471,314.33
  5. Step 5: Solve for x
    x = 193,188,471,314.33/647,945.40
  6. Step 6: Final answer
    x = 298,155.48

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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.