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Finding the Fourth Proportional to 6,990,736.49, 9,647,515.67 and 3,893,259.84

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Solution

The fourth proportional to 6,990,736.49, 9,647,515.67 and 3,893,259.84 is: 5,372,865.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990,736.49 : 9,647,515.67 = 3,893,259.84 : x
  2. Step 2: Convert to fraction form
    6,990,736.49/9,647,515.67 = 3,893,259.84/x
  3. Step 3: Cross multiply
    6,990,736.49x = 9,647,515.67 × 3,893,259.84
  4. Step 4: Simplify right side
    6,990,736.49x = 37,560,285,308,164.29
  5. Step 5: Solve for x
    x = 37,560,285,308,164.29/6,990,736.49
  6. Step 6: Final answer
    x = 5,372,865.27

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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.