Home / 858,269.20-1,287,425.69-259,249.90

Finding the Fourth Proportional to 858,269.20, 1,287,425.69 and 259,249.90

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Solution

The fourth proportional to 858,269.20, 1,287,425.69 and 259,249.90 is: 388,881.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,269.20 : 1,287,425.69 = 259,249.90 : x
  2. Step 2: Convert to fraction form
    858,269.20/1,287,425.69 = 259,249.90/x
  3. Step 3: Cross multiply
    858,269.20x = 1,287,425.69 × 259,249.90
  4. Step 4: Simplify right side
    858,269.20x = 333,764,981,389.93
  5. Step 5: Solve for x
    x = 333,764,981,389.93/858,269.20
  6. Step 6: Final answer
    x = 388,881.46

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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.