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Finding the Fourth Proportional to 6,616,286.78, 9,916,991.49 and 3,368,708.69

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Solution

The fourth proportional to 6,616,286.78, 9,916,991.49 and 3,368,708.69 is: 5,049,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616,286.78 : 9,916,991.49 = 3,368,708.69 : x
  2. Step 2: Convert to fraction form
    6,616,286.78/9,916,991.49 = 3,368,708.69/x
  3. Step 3: Cross multiply
    6,616,286.78x = 9,916,991.49 × 3,368,708.69
  4. Step 4: Simplify right side
    6,616,286.78x = 33,407,455,411,019.05
  5. Step 5: Solve for x
    x = 33,407,455,411,019.05/6,616,286.78
  6. Step 6: Final answer
    x = 5,049,275.60

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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.