Home / 858,786.85-1,288,382.60-259,752.97

Finding the Fourth Proportional to 858,786.85, 1,288,382.60 and 259,752.97

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Solution

The fourth proportional to 858,786.85, 1,288,382.60 and 259,752.97 is: 389,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,786.85 : 1,288,382.60 = 259,752.97 : x
  2. Step 2: Convert to fraction form
    858,786.85/1,288,382.60 = 259,752.97/x
  3. Step 3: Cross multiply
    858,786.85x = 1,288,382.60 × 259,752.97
  4. Step 4: Simplify right side
    858,786.85x = 334,661,206,846.32
  5. Step 5: Solve for x
    x = 334,661,206,846.32/858,786.85
  6. Step 6: Final answer
    x = 389,690.65

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1.5x scale

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.