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Finding the Fourth Proportional to 511,945.60, 768,550.20 and 322,405.60

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Solution

The fourth proportional to 511,945.60, 768,550.20 and 322,405.60 is: 484,006.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,945.60 : 768,550.20 = 322,405.60 : x
  2. Step 2: Convert to fraction form
    511,945.60/768,550.20 = 322,405.60/x
  3. Step 3: Cross multiply
    511,945.60x = 768,550.20 × 322,405.60
  4. Step 4: Simplify right side
    511,945.60x = 247,784,888,361.12
  5. Step 5: Solve for x
    x = 247,784,888,361.12/511,945.60
  6. Step 6: Final answer
    x = 484,006.29

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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.