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Finding the Fourth Proportional to 818,369.56, 1,226,767 and 419,198.32

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Solution

The fourth proportional to 818,369.56, 1,226,767 and 419,198.32 is: 628,394.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,369.56 : 1,226,767 = 419,198.32 : x
  2. Step 2: Convert to fraction form
    818,369.56/1,226,767 = 419,198.32/x
  3. Step 3: Cross multiply
    818,369.56x = 1,226,767 × 419,198.32
  4. Step 4: Simplify right side
    818,369.56x = 514,258,665,431.44
  5. Step 5: Solve for x
    x = 514,258,665,431.44/818,369.56
  6. Step 6: Final answer
    x = 628,394.18

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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.