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Finding the Fourth Proportional to 6,620,643.05, 9,930,996.30 and 2,009,669.09

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Solution

The fourth proportional to 6,620,643.05, 9,930,996.30 and 2,009,669.09 is: 3,014,513.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620,643.05 : 9,930,996.30 = 2,009,669.09 : x
  2. Step 2: Convert to fraction form
    6,620,643.05/9,930,996.30 = 2,009,669.09/x
  3. Step 3: Cross multiply
    6,620,643.05x = 9,930,996.30 × 2,009,669.09
  4. Step 4: Simplify right side
    6,620,643.05x = 19,958,016,297,014.37
  5. Step 5: Solve for x
    x = 19,958,016,297,014.37/6,620,643.05
  6. Step 6: Final answer
    x = 3,014,513.26

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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.