Home / 858,149.45-1,286,710.36-289,517.96

Finding the Fourth Proportional to 858,149.45, 1,286,710.36 and 289,517.96

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Solution

The fourth proportional to 858,149.45, 1,286,710.36 and 289,517.96 is: 434,103.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,149.45 : 1,286,710.36 = 289,517.96 : x
  2. Step 2: Convert to fraction form
    858,149.45/1,286,710.36 = 289,517.96/x
  3. Step 3: Cross multiply
    858,149.45x = 1,286,710.36 × 289,517.96
  4. Step 4: Simplify right side
    858,149.45x = 372,525,757,231.28
  5. Step 5: Solve for x
    x = 372,525,757,231.28/858,149.45
  6. Step 6: Final answer
    x = 434,103.59

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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.