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Finding the Fourth Proportional to 512,874.06, 707,768.36 and 280,305.68

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Solution

The fourth proportional to 512,874.06, 707,768.36 and 280,305.68 is: 386,823.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,874.06 : 707,768.36 = 280,305.68 : x
  2. Step 2: Convert to fraction form
    512,874.06/707,768.36 = 280,305.68/x
  3. Step 3: Cross multiply
    512,874.06x = 707,768.36 × 280,305.68
  4. Step 4: Simplify right side
    512,874.06x = 198,391,486,491.92
  5. Step 5: Solve for x
    x = 198,391,486,491.92/512,874.06
  6. Step 6: Final answer
    x = 386,823.01

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