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Finding the Fourth Proportional to 638,551.80, 958,200.48 and 354,481.56

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Solution

The fourth proportional to 638,551.80, 958,200.48 and 354,481.56 is: 531,929.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,551.80 : 958,200.48 = 354,481.56 : x
  2. Step 2: Convert to fraction form
    638,551.80/958,200.48 = 354,481.56/x
  3. Step 3: Cross multiply
    638,551.80x = 958,200.48 × 354,481.56
  4. Step 4: Simplify right side
    638,551.80x = 339,664,400,943.15
  5. Step 5: Solve for x
    x = 339,664,400,943.15/638,551.80
  6. Step 6: Final answer
    x = 531,929.28

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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.