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Finding the Fourth Proportional to 783,872.96, 1,081,940.64 and 481,892

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Solution

The fourth proportional to 783,872.96, 1,081,940.64 and 481,892 is: 665,131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,872.96 : 1,081,940.64 = 481,892 : x
  2. Step 2: Convert to fraction form
    783,872.96/1,081,940.64 = 481,892/x
  3. Step 3: Cross multiply
    783,872.96x = 1,081,940.64 × 481,892
  4. Step 4: Simplify right side
    783,872.96x = 521,378,538,890.88
  5. Step 5: Solve for x
    x = 521,378,538,890.88/783,872.96
  6. Step 6: Final answer
    x = 665,131.42

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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.