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Finding the Fourth Proportional to 553,804.50, 764,505.34 and 324,329.88

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Solution

The fourth proportional to 553,804.50, 764,505.34 and 324,329.88 is: 447,724.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,804.50 : 764,505.34 = 324,329.88 : x
  2. Step 2: Convert to fraction form
    553,804.50/764,505.34 = 324,329.88/x
  3. Step 3: Cross multiply
    553,804.50x = 764,505.34 × 324,329.88
  4. Step 4: Simplify right side
    553,804.50x = 247,951,925,181.56
  5. Step 5: Solve for x
    x = 247,951,925,181.56/553,804.50
  6. Step 6: Final answer
    x = 447,724.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.