Home / 2,187,011.97-3,018,078.39-1,220,142.45

Finding the Fourth Proportional to 2,187,011.97, 3,018,078.39 and 1,220,142.45

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Solution

The fourth proportional to 2,187,011.97, 3,018,078.39 and 1,220,142.45 is: 1,683,797.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,011.97 : 3,018,078.39 = 1,220,142.45 : x
  2. Step 2: Convert to fraction form
    2,187,011.97/3,018,078.39 = 1,220,142.45/x
  3. Step 3: Cross multiply
    2,187,011.97x = 3,018,078.39 × 1,220,142.45
  4. Step 4: Simplify right side
    2,187,011.97x = 3,682,485,561,066.66
  5. Step 5: Solve for x
    x = 3,682,485,561,066.66/2,187,011.97
  6. Step 6: Final answer
    x = 1,683,797.63

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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.