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Finding the Fourth Proportional to 710,979.64, 981,151.86 and 388,691.08

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Solution

The fourth proportional to 710,979.64, 981,151.86 and 388,691.08 is: 536,393.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,979.64 : 981,151.86 = 388,691.08 : x
  2. Step 2: Convert to fraction form
    710,979.64/981,151.86 = 388,691.08/x
  3. Step 3: Cross multiply
    710,979.64x = 981,151.86 × 388,691.08
  4. Step 4: Simplify right side
    710,979.64x = 381,364,976,107.41
  5. Step 5: Solve for x
    x = 381,364,976,107.41/710,979.64
  6. Step 6: Final answer
    x = 536,393.67

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