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Finding the Fourth Proportional to 637,078,375.40, 955,617,563.10 and 200,512,879.93

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Solution

The fourth proportional to 637,078,375.40, 955,617,563.10 and 200,512,879.93 is: 300,769,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,078,375.40 : 955,617,563.10 = 200,512,879.93 : x
  2. Step 2: Convert to fraction form
    637,078,375.40/955,617,563.10 = 200,512,879.93/x
  3. Step 3: Cross multiply
    637,078,375.40x = 955,617,563.10 × 200,512,879.93
  4. Step 4: Simplify right side
    637,078,375.40x = 191,613,629,684,091,424
  5. Step 5: Solve for x
    x = 191,613,629,684,091,424/637,078,375.40
  6. Step 6: Final answer
    x = 300,769,319.89

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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.