Home / 857,822.43-1,286,742.88-258,788.78

Finding the Fourth Proportional to 857,822.43, 1,286,742.88 and 258,788.78

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Solution

The fourth proportional to 857,822.43, 1,286,742.88 and 258,788.78 is: 388,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,822.43 : 1,286,742.88 = 258,788.78 : x
  2. Step 2: Convert to fraction form
    857,822.43/1,286,742.88 = 258,788.78/x
  3. Step 3: Cross multiply
    857,822.43x = 1,286,742.88 × 258,788.78
  4. Step 4: Simplify right side
    857,822.43x = 332,994,613,655.17
  5. Step 5: Solve for x
    x = 332,994,613,655.17/857,822.43
  6. Step 6: Final answer
    x = 388,185.95

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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.