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Finding the Fourth Proportional to 631,076.97, 870,771.52 and 372,997.31

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Solution

The fourth proportional to 631,076.97, 870,771.52 and 372,997.31 is: 514,668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,076.97 : 870,771.52 = 372,997.31 : x
  2. Step 2: Convert to fraction form
    631,076.97/870,771.52 = 372,997.31/x
  3. Step 3: Cross multiply
    631,076.97x = 870,771.52 × 372,997.31
  4. Step 4: Simplify right side
    631,076.97x = 324,795,428,598.89
  5. Step 5: Solve for x
    x = 324,795,428,598.89/631,076.97
  6. Step 6: Final answer
    x = 514,668.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.