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Finding the Fourth Proportional to 861,256.72, 1,188,525.68 and 479,276.96

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Solution

The fourth proportional to 861,256.72, 1,188,525.68 and 479,276.96 is: 661,397.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,256.72 : 1,188,525.68 = 479,276.96 : x
  2. Step 2: Convert to fraction form
    861,256.72/1,188,525.68 = 479,276.96/x
  3. Step 3: Cross multiply
    861,256.72x = 1,188,525.68 × 479,276.96
  4. Step 4: Simplify right side
    861,256.72x = 569,632,974,792.33
  5. Step 5: Solve for x
    x = 569,632,974,792.33/861,256.72
  6. Step 6: Final answer
    x = 661,397.42

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