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Finding the Fourth Proportional to 2,666,463, 3,999,694.50 and 671,919

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Solution

The fourth proportional to 2,666,463, 3,999,694.50 and 671,919 is: 1,007,878.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666,463 : 3,999,694.50 = 671,919 : x
  2. Step 2: Convert to fraction form
    2,666,463/3,999,694.50 = 671,919/x
  3. Step 3: Cross multiply
    2,666,463x = 3,999,694.50 × 671,919
  4. Step 4: Simplify right side
    2,666,463x = 2,687,470,728,745.50
  5. Step 5: Solve for x
    x = 2,687,470,728,745.50/2,666,463
  6. Step 6: Final answer
    x = 1,007,878.50

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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.