Home / 664,718.10-996,868.01-215,334.70

Finding the Fourth Proportional to 664,718.10, 996,868.01 and 215,334.70

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Solution

The fourth proportional to 664,718.10, 996,868.01 and 215,334.70 is: 322,934.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,718.10 : 996,868.01 = 215,334.70 : x
  2. Step 2: Convert to fraction form
    664,718.10/996,868.01 = 215,334.70/x
  3. Step 3: Cross multiply
    664,718.10x = 996,868.01 × 215,334.70
  4. Step 4: Simplify right side
    664,718.10x = 214,660,273,872.95
  5. Step 5: Solve for x
    x = 214,660,273,872.95/664,718.10
  6. Step 6: Final answer
    x = 322,934.30

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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.