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Finding the Fourth Proportional to 663,906.60, 995,859.90 and 220,674.60

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Solution

The fourth proportional to 663,906.60, 995,859.90 and 220,674.60 is: 331,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,906.60 : 995,859.90 = 220,674.60 : x
  2. Step 2: Convert to fraction form
    663,906.60/995,859.90 = 220,674.60/x
  3. Step 3: Cross multiply
    663,906.60x = 995,859.90 × 220,674.60
  4. Step 4: Simplify right side
    663,906.60x = 219,760,985,088.54
  5. Step 5: Solve for x
    x = 219,760,985,088.54/663,906.60
  6. Step 6: Final answer
    x = 331,011.90

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Double scale
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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.