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Finding the Fourth Proportional to 1,259,843.51, 1,738,533.97 and 743,763.64

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Solution

The fourth proportional to 1,259,843.51, 1,738,533.97 and 743,763.64 is: 1,026,364.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,843.51 : 1,738,533.97 = 743,763.64 : x
  2. Step 2: Convert to fraction form
    1,259,843.51/1,738,533.97 = 743,763.64/x
  3. Step 3: Cross multiply
    1,259,843.51x = 1,738,533.97 × 743,763.64
  4. Step 4: Simplify right side
    1,259,843.51x = 1,293,058,359,576.09
  5. Step 5: Solve for x
    x = 1,293,058,359,576.09/1,259,843.51
  6. Step 6: Final answer
    x = 1,026,364.27

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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.