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Finding the Fourth Proportional to 663,472,364.60, 995,208,546.90 and 422,204,857.40

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Solution

The fourth proportional to 663,472,364.60, 995,208,546.90 and 422,204,857.40 is: 633,307,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,472,364.60 : 995,208,546.90 = 422,204,857.40 : x
  2. Step 2: Convert to fraction form
    663,472,364.60/995,208,546.90 = 422,204,857.40/x
  3. Step 3: Cross multiply
    663,472,364.60x = 995,208,546.90 × 422,204,857.40
  4. Step 4: Simplify right side
    663,472,364.60x = 420,181,882,627,175,680
  5. Step 5: Solve for x
    x = 420,181,882,627,175,680/663,472,364.60
  6. Step 6: Final answer
    x = 633,307,286.10

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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.