Home / 2,187,021.78-3,018,091.94-1,220,152.22

Finding the Fourth Proportional to 2,187,021.78, 3,018,091.94 and 1,220,152.22

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Solution

The fourth proportional to 2,187,021.78, 3,018,091.94 and 1,220,152.22 is: 1,683,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,021.78 : 3,018,091.94 = 1,220,152.22 : x
  2. Step 2: Convert to fraction form
    2,187,021.78/3,018,091.94 = 1,220,152.22/x
  3. Step 3: Cross multiply
    2,187,021.78x = 3,018,091.94 × 1,220,152.22
  4. Step 4: Simplify right side
    2,187,021.78x = 3,682,531,580,755.11
  5. Step 5: Solve for x
    x = 3,682,531,580,755.11/2,187,021.78
  6. Step 6: Final answer
    x = 1,683,811.11

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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.