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Finding the Fourth Proportional to 512,012.64, 767,446.65 and 191,856.54

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Solution

The fourth proportional to 512,012.64, 767,446.65 and 191,856.54 is: 287,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,012.64 : 767,446.65 = 191,856.54 : x
  2. Step 2: Convert to fraction form
    512,012.64/767,446.65 = 191,856.54/x
  3. Step 3: Cross multiply
    512,012.64x = 767,446.65 × 191,856.54
  4. Step 4: Simplify right side
    512,012.64x = 147,239,658,903.59
  5. Step 5: Solve for x
    x = 147,239,658,903.59/512,012.64
  6. Step 6: Final answer
    x = 287,570.36

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