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Finding the Fourth Proportional to 1,376,991, 1,900,425.78 and 773,379

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Solution

The fourth proportional to 1,376,991, 1,900,425.78 and 773,379 is: 1,067,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376,991 : 1,900,425.78 = 773,379 : x
  2. Step 2: Convert to fraction form
    1,376,991/1,900,425.78 = 773,379/x
  3. Step 3: Cross multiply
    1,376,991x = 1,900,425.78 × 773,379
  4. Step 4: Simplify right side
    1,376,991x = 1,469,749,389,310.62
  5. Step 5: Solve for x
    x = 1,469,749,389,310.62/1,376,991
  6. Step 6: Final answer
    x = 1,067,363.10

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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.