Home / 857,824.43-1,286,745.88-258,790.78

Finding the Fourth Proportional to 857,824.43, 1,286,745.88 and 258,790.78

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Solution

The fourth proportional to 857,824.43, 1,286,745.88 and 258,790.78 is: 388,188.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,824.43 : 1,286,745.88 = 258,790.78 : x
  2. Step 2: Convert to fraction form
    857,824.43/1,286,745.88 = 258,790.78/x
  3. Step 3: Cross multiply
    857,824.43x = 1,286,745.88 × 258,790.78
  4. Step 4: Simplify right side
    857,824.43x = 332,997,969,946.99
  5. Step 5: Solve for x
    x = 332,997,969,946.99/857,824.43
  6. Step 6: Final answer
    x = 388,188.96

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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.