Home / 857,824.36-1,286,745.78-258,790.71

Finding the Fourth Proportional to 857,824.36, 1,286,745.78 and 258,790.71

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Solution

The fourth proportional to 857,824.36, 1,286,745.78 and 258,790.71 is: 388,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,824.36 : 1,286,745.78 = 258,790.71 : x
  2. Step 2: Convert to fraction form
    857,824.36/1,286,745.78 = 258,790.71/x
  3. Step 3: Cross multiply
    857,824.36x = 1,286,745.78 × 258,790.71
  4. Step 4: Simplify right side
    857,824.36x = 332,997,859,791.47
  5. Step 5: Solve for x
    x = 332,997,859,791.47/857,824.36
  6. Step 6: Final answer
    x = 388,188.86

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1.5x scale

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.