Home / 857,687.68-1,286,115.54-258,537.16

Finding the Fourth Proportional to 857,687.68, 1,286,115.54 and 258,537.16

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Solution

The fourth proportional to 857,687.68, 1,286,115.54 and 258,537.16 is: 387,680.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,687.68 : 1,286,115.54 = 258,537.16 : x
  2. Step 2: Convert to fraction form
    857,687.68/1,286,115.54 = 258,537.16/x
  3. Step 3: Cross multiply
    857,687.68x = 1,286,115.54 × 258,537.16
  4. Step 4: Simplify right side
    857,687.68x = 332,508,659,143.47
  5. Step 5: Solve for x
    x = 332,508,659,143.47/857,687.68
  6. Step 6: Final answer
    x = 387,680.35

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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.