Home / 870,979.90-1,306,469.36-271,992.39

Finding the Fourth Proportional to 870,979.90, 1,306,469.36 and 271,992.39

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Solution

The fourth proportional to 870,979.90, 1,306,469.36 and 271,992.39 is: 407,988.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,979.90 : 1,306,469.36 = 271,992.39 : x
  2. Step 2: Convert to fraction form
    870,979.90/1,306,469.36 = 271,992.39/x
  3. Step 3: Cross multiply
    870,979.90x = 1,306,469.36 × 271,992.39
  4. Step 4: Simplify right side
    870,979.90x = 355,349,723,688.17
  5. Step 5: Solve for x
    x = 355,349,723,688.17/870,979.90
  6. Step 6: Final answer
    x = 407,988.43

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