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Finding the Fourth Proportional to 9,643,978, 13,309,313 and 5,351,626

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Solution

The fourth proportional to 9,643,978, 13,309,313 and 5,351,626 is: 7,385,589.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,643,978 : 13,309,313 = 5,351,626 : x
  2. Step 2: Convert to fraction form
    9,643,978/13,309,313 = 5,351,626/x
  3. Step 3: Cross multiply
    9,643,978x = 13,309,313 × 5,351,626
  4. Step 4: Simplify right side
    9,643,978x = 71,226,465,492,938
  5. Step 5: Solve for x
    x = 71,226,465,492,938/9,643,978
  6. Step 6: Final answer
    x = 7,385,589.79

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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.