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Finding the Fourth Proportional to 396,407,998.80, 594,611,998.20 and 396,407,998.80

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Solution

The fourth proportional to 396,407,998.80, 594,611,998.20 and 396,407,998.80 is: 594,611,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,407,998.80 : 594,611,998.20 = 396,407,998.80 : x
  2. Step 2: Convert to fraction form
    396,407,998.80/594,611,998.20 = 396,407,998.80/x
  3. Step 3: Cross multiply
    396,407,998.80x = 594,611,998.20 × 396,407,998.80
  4. Step 4: Simplify right side
    396,407,998.80x = 235,708,952,268,931,232
  5. Step 5: Solve for x
    x = 235,708,952,268,931,232/396,407,998.80
  6. Step 6: Final answer
    x = 594,611,998.20

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Similar ratio
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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.