Home / 2,628,135.78-3,939,112.90-1,187,137.27

Finding the Fourth Proportional to 2,628,135.78, 3,939,112.90 and 1,187,137.27

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Solution

The fourth proportional to 2,628,135.78, 3,939,112.90 and 1,187,137.27 is: 1,779,309.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628,135.78 : 3,939,112.90 = 1,187,137.27 : x
  2. Step 2: Convert to fraction form
    2,628,135.78/3,939,112.90 = 1,187,137.27/x
  3. Step 3: Cross multiply
    2,628,135.78x = 3,939,112.90 × 1,187,137.27
  4. Step 4: Simplify right side
    2,628,135.78x = 4,676,267,734,327.78
  5. Step 5: Solve for x
    x = 4,676,267,734,327.78/2,628,135.78
  6. Step 6: Final answer
    x = 1,779,309.79

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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.