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Finding the Fourth Proportional to 1,279,346.03, 1,764,757.41 and 826,637.03

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Solution

The fourth proportional to 1,279,346.03, 1,764,757.41 and 826,637.03 is: 1,140,280.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,346.03 : 1,764,757.41 = 826,637.03 : x
  2. Step 2: Convert to fraction form
    1,279,346.03/1,764,757.41 = 826,637.03/x
  3. Step 3: Cross multiply
    1,279,346.03x = 1,764,757.41 × 826,637.03
  4. Step 4: Simplify right side
    1,279,346.03x = 1,458,813,824,072.89
  5. Step 5: Solve for x
    x = 1,458,813,824,072.89/1,279,346.03
  6. Step 6: Final answer
    x = 1,140,280.89

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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.