Home / 664,418.49-996,773.09-215,184.78

Finding the Fourth Proportional to 664,418.49, 996,773.09 and 215,184.78

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Solution

The fourth proportional to 664,418.49, 996,773.09 and 215,184.78 is: 322,824.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,418.49 : 996,773.09 = 215,184.78 : x
  2. Step 2: Convert to fraction form
    664,418.49/996,773.09 = 215,184.78/x
  3. Step 3: Cross multiply
    664,418.49x = 996,773.09 × 215,184.78
  4. Step 4: Simplify right side
    664,418.49x = 214,490,398,081.57
  5. Step 5: Solve for x
    x = 214,490,398,081.57/664,418.49
  6. Step 6: Final answer
    x = 322,824.25

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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.