Home / 689,745.18-1,034,661.49-216,449.22

Finding the Fourth Proportional to 689,745.18, 1,034,661.49 and 216,449.22

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Solution

The fourth proportional to 689,745.18, 1,034,661.49 and 216,449.22 is: 324,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,745.18 : 1,034,661.49 = 216,449.22 : x
  2. Step 2: Convert to fraction form
    689,745.18/1,034,661.49 = 216,449.22/x
  3. Step 3: Cross multiply
    689,745.18x = 1,034,661.49 × 216,449.22
  4. Step 4: Simplify right side
    689,745.18x = 223,951,672,474.54
  5. Step 5: Solve for x
    x = 223,951,672,474.54/689,745.18
  6. Step 6: Final answer
    x = 324,687.55

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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.