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Finding the Fourth Proportional to 448,553.65, 672,738.72 and 128,619.81

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Solution

The fourth proportional to 448,553.65, 672,738.72 and 128,619.81 is: 192,903.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,553.65 : 672,738.72 = 128,619.81 : x
  2. Step 2: Convert to fraction form
    448,553.65/672,738.72 = 128,619.81/x
  3. Step 3: Cross multiply
    448,553.65x = 672,738.72 × 128,619.81
  4. Step 4: Simplify right side
    448,553.65x = 86,527,526,346.04
  5. Step 5: Solve for x
    x = 86,527,526,346.04/448,553.65
  6. Step 6: Final answer
    x = 192,903.40

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