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Finding the Fourth Proportional to 630,201.60, 945,763.20 and 419,769.60

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Solution

The fourth proportional to 630,201.60, 945,763.20 and 419,769.60 is: 629,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,201.60 : 945,763.20 = 419,769.60 : x
  2. Step 2: Convert to fraction form
    630,201.60/945,763.20 = 419,769.60/x
  3. Step 3: Cross multiply
    630,201.60x = 945,763.20 × 419,769.60
  4. Step 4: Simplify right side
    630,201.60x = 397,002,640,158.72
  5. Step 5: Solve for x
    x = 397,002,640,158.72/630,201.60
  6. Step 6: Final answer
    x = 629,961.33

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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.