Home / 1,639,665.90-2,263,791.78-1,028,656.44

Finding the Fourth Proportional to 1,639,665.90, 2,263,791.78 and 1,028,656.44

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Solution

The fourth proportional to 1,639,665.90, 2,263,791.78 and 1,028,656.44 is: 1,420,206.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639,665.90 : 2,263,791.78 = 1,028,656.44 : x
  2. Step 2: Convert to fraction form
    1,639,665.90/2,263,791.78 = 1,028,656.44/x
  3. Step 3: Cross multiply
    1,639,665.90x = 2,263,791.78 × 1,028,656.44
  4. Step 4: Simplify right side
    1,639,665.90x = 2,328,663,993,316.06
  5. Step 5: Solve for x
    x = 2,328,663,993,316.06/1,639,665.90
  6. Step 6: Final answer
    x = 1,420,206.39

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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.