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Finding the Fourth Proportional to 1,203,389.73, 1,659,721.19 and 1,022,699.79

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Solution

The fourth proportional to 1,203,389.73, 1,659,721.19 and 1,022,699.79 is: 1,410,512.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,389.73 : 1,659,721.19 = 1,022,699.79 : x
  2. Step 2: Convert to fraction form
    1,203,389.73/1,659,721.19 = 1,022,699.79/x
  3. Step 3: Cross multiply
    1,203,389.73x = 1,659,721.19 × 1,022,699.79
  4. Step 4: Simplify right side
    1,203,389.73x = 1,697,396,507,358.05
  5. Step 5: Solve for x
    x = 1,697,396,507,358.05/1,203,389.73
  6. Step 6: Final answer
    x = 1,410,512.71

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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.