Home / 858,785.85-1,288,381.10-259,751.97

Finding the Fourth Proportional to 858,785.85, 1,288,381.10 and 259,751.97

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Solution

The fourth proportional to 858,785.85, 1,288,381.10 and 259,751.97 is: 389,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,785.85 : 1,288,381.10 = 259,751.97 : x
  2. Step 2: Convert to fraction form
    858,785.85/1,288,381.10 = 259,751.97/x
  3. Step 3: Cross multiply
    858,785.85x = 1,288,381.10 × 259,751.97
  4. Step 4: Simplify right side
    858,785.85x = 334,659,527,537.01
  5. Step 5: Solve for x
    x = 334,659,527,537.01/858,785.85
  6. Step 6: Final answer
    x = 389,689.15

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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.