Home / 858,255.20-1,287,404.69-259,235.90

Finding the Fourth Proportional to 858,255.20, 1,287,404.69 and 259,235.90

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Solution

The fourth proportional to 858,255.20, 1,287,404.69 and 259,235.90 is: 388,860.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,255.20 : 1,287,404.69 = 259,235.90 : x
  2. Step 2: Convert to fraction form
    858,255.20/1,287,404.69 = 259,235.90/x
  3. Step 3: Cross multiply
    858,255.20x = 1,287,404.69 × 259,235.90
  4. Step 4: Simplify right side
    858,255.20x = 333,741,513,476.37
  5. Step 5: Solve for x
    x = 333,741,513,476.37/858,255.20
  6. Step 6: Final answer
    x = 388,860.46

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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.