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Finding the Fourth Proportional to 1,309,906.62, 1,964,747.37 and 797,438.75

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Solution

The fourth proportional to 1,309,906.62, 1,964,747.37 and 797,438.75 is: 1,196,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,906.62 : 1,964,747.37 = 797,438.75 : x
  2. Step 2: Convert to fraction form
    1,309,906.62/1,964,747.37 = 797,438.75/x
  3. Step 3: Cross multiply
    1,309,906.62x = 1,964,747.37 × 797,438.75
  4. Step 4: Simplify right side
    1,309,906.62x = 1,566,765,682,811.39
  5. Step 5: Solve for x
    x = 1,566,765,682,811.39/1,309,906.62
  6. Step 6: Final answer
    x = 1,196,089.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.