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Finding the Fourth Proportional to 578,942.28, 798,939.18 and 324,288

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Solution

The fourth proportional to 578,942.28, 798,939.18 and 324,288 is: 447,516.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,942.28 : 798,939.18 = 324,288 : x
  2. Step 2: Convert to fraction form
    578,942.28/798,939.18 = 324,288/x
  3. Step 3: Cross multiply
    578,942.28x = 798,939.18 × 324,288
  4. Step 4: Simplify right side
    578,942.28x = 259,086,388,803.84
  5. Step 5: Solve for x
    x = 259,086,388,803.84/578,942.28
  6. Step 6: Final answer
    x = 447,516.79

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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.