Home / 2,115,821.44-2,919,007.68-1,209,919.36

Finding the Fourth Proportional to 2,115,821.44, 2,919,007.68 and 1,209,919.36

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Solution

The fourth proportional to 2,115,821.44, 2,919,007.68 and 1,209,919.36 is: 1,669,216.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,821.44 : 2,919,007.68 = 1,209,919.36 : x
  2. Step 2: Convert to fraction form
    2,115,821.44/2,919,007.68 = 1,209,919.36/x
  3. Step 3: Cross multiply
    2,115,821.44x = 2,919,007.68 × 1,209,919.36
  4. Step 4: Simplify right side
    2,115,821.44x = 3,531,763,904,020.69
  5. Step 5: Solve for x
    x = 3,531,763,904,020.69/2,115,821.44
  6. Step 6: Final answer
    x = 1,669,216.43

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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.