Home / 2,628,121.32-3,939,091.13-1,187,122.74

Finding the Fourth Proportional to 2,628,121.32, 3,939,091.13 and 1,187,122.74

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Solution

The fourth proportional to 2,628,121.32, 3,939,091.13 and 1,187,122.74 is: 1,779,287.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628,121.32 : 3,939,091.13 = 1,187,122.74 : x
  2. Step 2: Convert to fraction form
    2,628,121.32/3,939,091.13 = 1,187,122.74/x
  3. Step 3: Cross multiply
    2,628,121.32x = 3,939,091.13 × 1,187,122.74
  4. Step 4: Simplify right side
    2,628,121.32x = 4,676,184,640,212.61
  5. Step 5: Solve for x
    x = 4,676,184,640,212.61/2,628,121.32
  6. Step 6: Final answer
    x = 1,779,287.97

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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.