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Finding the Fourth Proportional to 1,888,441.81, 2,605,968.23 and 1,072,642.97

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Solution

The fourth proportional to 1,888,441.81, 2,605,968.23 and 1,072,642.97 is: 1,480,201.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888,441.81 : 2,605,968.23 = 1,072,642.97 : x
  2. Step 2: Convert to fraction form
    1,888,441.81/2,605,968.23 = 1,072,642.97/x
  3. Step 3: Cross multiply
    1,888,441.81x = 2,605,968.23 × 1,072,642.97
  4. Step 4: Simplify right side
    1,888,441.81x = 2,795,273,503,104.55
  5. Step 5: Solve for x
    x = 2,795,273,503,104.55/1,888,441.81
  6. Step 6: Final answer
    x = 1,480,201.03

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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.