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Finding the Fourth Proportional to 9,405,017.01, 12,978,969.44 and 5,275,268.85

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Solution

The fourth proportional to 9,405,017.01, 12,978,969.44 and 5,275,268.85 is: 7,279,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,405,017.01 : 12,978,969.44 = 5,275,268.85 : x
  2. Step 2: Convert to fraction form
    9,405,017.01/12,978,969.44 = 5,275,268.85/x
  3. Step 3: Cross multiply
    9,405,017.01x = 12,978,969.44 × 5,275,268.85
  4. Step 4: Simplify right side
    9,405,017.01x = 68,467,553,248,464.23
  5. Step 5: Solve for x
    x = 68,467,553,248,464.23/9,405,017.01
  6. Step 6: Final answer
    x = 7,279,896.80

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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.