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Finding the Fourth Proportional to 819,446.67, 1,229,296.64 and 279,576.54

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Solution

The fourth proportional to 819,446.67, 1,229,296.64 and 279,576.54 is: 419,408.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,446.67 : 1,229,296.64 = 279,576.54 : x
  2. Step 2: Convert to fraction form
    819,446.67/1,229,296.64 = 279,576.54/x
  3. Step 3: Cross multiply
    819,446.67x = 1,229,296.64 × 279,576.54
  4. Step 4: Simplify right side
    819,446.67x = 343,682,499,846.94
  5. Step 5: Solve for x
    x = 343,682,499,846.94/819,446.67
  6. Step 6: Final answer
    x = 419,408.01

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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.