Home / 781,662.72-1,172,474.64-220,689.12

Finding the Fourth Proportional to 781,662.72, 1,172,474.64 and 220,689.12

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Solution

The fourth proportional to 781,662.72, 1,172,474.64 and 220,689.12 is: 331,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,662.72 : 1,172,474.64 = 220,689.12 : x
  2. Step 2: Convert to fraction form
    781,662.72/1,172,474.64 = 220,689.12/x
  3. Step 3: Cross multiply
    781,662.72x = 1,172,474.64 × 220,689.12
  4. Step 4: Simplify right side
    781,662.72x = 258,752,396,523.92
  5. Step 5: Solve for x
    x = 258,752,396,523.92/781,662.72
  6. Step 6: Final answer
    x = 331,028.19

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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.