Home / 862,125.31-1,189,734.24-499,618.72

Finding the Fourth Proportional to 862,125.31, 1,189,734.24 and 499,618.72

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Solution

The fourth proportional to 862,125.31, 1,189,734.24 and 499,618.72 is: 689,474.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,125.31 : 1,189,734.24 = 499,618.72 : x
  2. Step 2: Convert to fraction form
    862,125.31/1,189,734.24 = 499,618.72/x
  3. Step 3: Cross multiply
    862,125.31x = 1,189,734.24 × 499,618.72
  4. Step 4: Simplify right side
    862,125.31x = 594,413,498,128.97
  5. Step 5: Solve for x
    x = 594,413,498,128.97/862,125.31
  6. Step 6: Final answer
    x = 689,474.59

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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.