Home / 422,291,400.03-632,612,456.16-200,647,320.78

Finding the Fourth Proportional to 422,291,400.03, 632,612,456.16 and 200,647,320.78

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Solution

The fourth proportional to 422,291,400.03, 632,612,456.16 and 200,647,320.78 is: 300,579,160.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,291,400.03 : 632,612,456.16 = 200,647,320.78 : x
  2. Step 2: Convert to fraction form
    422,291,400.03/632,612,456.16 = 200,647,320.78/x
  3. Step 3: Cross multiply
    422,291,400.03x = 632,612,456.16 × 200,647,320.78
  4. Step 4: Simplify right side
    422,291,400.03x = 126,931,994,420,559,200
  5. Step 5: Solve for x
    x = 126,931,994,420,559,200/422,291,400.03
  6. Step 6: Final answer
    x = 300,579,160.29

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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.