Home / 858,108.33-1,287,217.17-289,546.65

Finding the Fourth Proportional to 858,108.33, 1,287,217.17 and 289,546.65

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Solution

The fourth proportional to 858,108.33, 1,287,217.17 and 289,546.65 is: 434,338.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,108.33 : 1,287,217.17 = 289,546.65 : x
  2. Step 2: Convert to fraction form
    858,108.33/1,287,217.17 = 289,546.65/x
  3. Step 3: Cross multiply
    858,108.33x = 1,287,217.17 × 289,546.65
  4. Step 4: Simplify right side
    858,108.33x = 372,709,419,395.98
  5. Step 5: Solve for x
    x = 372,709,419,395.98/858,108.33
  6. Step 6: Final answer
    x = 434,338.42

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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.