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Finding the Fourth Proportional to 639,274.56, 882,198 and 352,794.60

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Solution

The fourth proportional to 639,274.56, 882,198 and 352,794.60 is: 486,856.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,274.56 : 882,198 = 352,794.60 : x
  2. Step 2: Convert to fraction form
    639,274.56/882,198 = 352,794.60/x
  3. Step 3: Cross multiply
    639,274.56x = 882,198 × 352,794.60
  4. Step 4: Simplify right side
    639,274.56x = 311,234,690,530.80
  5. Step 5: Solve for x
    x = 311,234,690,530.80/639,274.56
  6. Step 6: Final answer
    x = 486,856.06

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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.