Home / 857,964.45-1,286,940.90-218,262.70

Finding the Fourth Proportional to 857,964.45, 1,286,940.90 and 218,262.70

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Solution

The fourth proportional to 857,964.45, 1,286,940.90 and 218,262.70 is: 327,392.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,964.45 : 1,286,940.90 = 218,262.70 : x
  2. Step 2: Convert to fraction form
    857,964.45/1,286,940.90 = 218,262.70/x
  3. Step 3: Cross multiply
    857,964.45x = 1,286,940.90 × 218,262.70
  4. Step 4: Simplify right side
    857,964.45x = 280,891,189,139.73
  5. Step 5: Solve for x
    x = 280,891,189,139.73/857,964.45
  6. Step 6: Final answer
    x = 327,392.57

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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.