Home / 857,435.11-1,286,153.16-217,786.82

Finding the Fourth Proportional to 857,435.11, 1,286,153.16 and 217,786.82

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Solution

The fourth proportional to 857,435.11, 1,286,153.16 and 217,786.82 is: 326,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,435.11 : 1,286,153.16 = 217,786.82 : x
  2. Step 2: Convert to fraction form
    857,435.11/1,286,153.16 = 217,786.82/x
  3. Step 3: Cross multiply
    857,435.11x = 1,286,153.16 × 217,786.82
  4. Step 4: Simplify right side
    857,435.11x = 280,107,206,749.35
  5. Step 5: Solve for x
    x = 280,107,206,749.35/857,435.11
  6. Step 6: Final answer
    x = 326,680.36

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Double scale
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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.