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Finding the Fourth Proportional to 1,279,354.93, 1,764,769.72 and 826,645.93

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Solution

The fourth proportional to 1,279,354.93, 1,764,769.72 and 826,645.93 is: 1,140,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,354.93 : 1,764,769.72 = 826,645.93 : x
  2. Step 2: Convert to fraction form
    1,279,354.93/1,764,769.72 = 826,645.93/x
  3. Step 3: Cross multiply
    1,279,354.93x = 1,764,769.72 × 826,645.93
  4. Step 4: Simplify right side
    1,279,354.93x = 1,458,839,695,087.80
  5. Step 5: Solve for x
    x = 1,458,839,695,087.80/1,279,354.93
  6. Step 6: Final answer
    x = 1,140,293.18

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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.