Home / 664,417.49-996,771.59-215,183.78

Finding the Fourth Proportional to 664,417.49, 996,771.59 and 215,183.78

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Solution

The fourth proportional to 664,417.49, 996,771.59 and 215,183.78 is: 322,822.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,417.49 : 996,771.59 = 215,183.78 : x
  2. Step 2: Convert to fraction form
    664,417.49/996,771.59 = 215,183.78/x
  3. Step 3: Cross multiply
    664,417.49x = 996,771.59 × 215,183.78
  4. Step 4: Simplify right side
    664,417.49x = 214,489,072,473.03
  5. Step 5: Solve for x
    x = 214,489,072,473.03/664,417.49
  6. Step 6: Final answer
    x = 322,822.74

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Similar ratio
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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.