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Finding the Fourth Proportional to 552,257.97, 762,120.55 and 310,538.43

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Solution

The fourth proportional to 552,257.97, 762,120.55 and 310,538.43 is: 428,545.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,257.97 : 762,120.55 = 310,538.43 : x
  2. Step 2: Convert to fraction form
    552,257.97/762,120.55 = 310,538.43/x
  3. Step 3: Cross multiply
    552,257.97x = 762,120.55 × 310,538.43
  4. Step 4: Simplify right side
    552,257.97x = 236,667,719,852.60
  5. Step 5: Solve for x
    x = 236,667,719,852.60/552,257.97
  6. Step 6: Final answer
    x = 428,545.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.