Home / 396,978,052.60-595,467,078.90-287,288,630.20

Finding the Fourth Proportional to 396,978,052.60, 595,467,078.90 and 287,288,630.20

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Solution

The fourth proportional to 396,978,052.60, 595,467,078.90 and 287,288,630.20 is: 430,932,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,978,052.60 : 595,467,078.90 = 287,288,630.20 : x
  2. Step 2: Convert to fraction form
    396,978,052.60/595,467,078.90 = 287,288,630.20/x
  3. Step 3: Cross multiply
    396,978,052.60x = 595,467,078.90 × 287,288,630.20
  4. Step 4: Simplify right side
    396,978,052.60x = 171,070,921,426,376,320
  5. Step 5: Solve for x
    x = 171,070,921,426,376,320/396,978,052.60
  6. Step 6: Final answer
    x = 430,932,945.30

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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.