Home / 396,678,839.40-595,018,259.10-287,839,722.60

Finding the Fourth Proportional to 396,678,839.40, 595,018,259.10 and 287,839,722.60

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Solution

The fourth proportional to 396,678,839.40, 595,018,259.10 and 287,839,722.60 is: 431,759,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,678,839.40 : 595,018,259.10 = 287,839,722.60 : x
  2. Step 2: Convert to fraction form
    396,678,839.40/595,018,259.10 = 287,839,722.60/x
  3. Step 3: Cross multiply
    396,678,839.40x = 595,018,259.10 × 287,839,722.60
  4. Step 4: Simplify right side
    396,678,839.40x = 171,269,890,641,278,944
  5. Step 5: Solve for x
    x = 171,269,890,641,278,944/396,678,839.40
  6. Step 6: Final answer
    x = 431,759,583.90

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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.