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Finding the Fourth Proportional to 9,978,854.40, 14,942,776.32 and 5,486,192.64

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Solution

The fourth proportional to 9,978,854.40, 14,942,776.32 and 5,486,192.64 is: 8,215,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,978,854.40 : 14,942,776.32 = 5,486,192.64 : x
  2. Step 2: Convert to fraction form
    9,978,854.40/14,942,776.32 = 5,486,192.64/x
  3. Step 3: Cross multiply
    9,978,854.40x = 14,942,776.32 × 5,486,192.64
  4. Step 4: Simplify right side
    9,978,854.40x = 81,978,949,467,950.28
  5. Step 5: Solve for x
    x = 81,978,949,467,950.28/9,978,854.40
  6. Step 6: Final answer
    x = 8,215,266.62

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