Home / 857,823.43-1,286,744.38-258,789.78

Finding the Fourth Proportional to 857,823.43, 1,286,744.38 and 258,789.78

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Solution

The fourth proportional to 857,823.43, 1,286,744.38 and 258,789.78 is: 388,187.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,823.43 : 1,286,744.38 = 258,789.78 : x
  2. Step 2: Convert to fraction form
    857,823.43/1,286,744.38 = 258,789.78/x
  3. Step 3: Cross multiply
    857,823.43x = 1,286,744.38 × 258,789.78
  4. Step 4: Simplify right side
    857,823.43x = 332,996,295,016.44
  5. Step 5: Solve for x
    x = 332,996,295,016.44/857,823.43
  6. Step 6: Final answer
    x = 388,187.46

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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.