Home / 815,331.92-1,222,527-316,112.72

Finding the Fourth Proportional to 815,331.92, 1,222,527 and 316,112.72

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Solution

The fourth proportional to 815,331.92, 1,222,527 and 316,112.72 is: 473,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,331.92 : 1,222,527 = 316,112.72 : x
  2. Step 2: Convert to fraction form
    815,331.92/1,222,527 = 316,112.72/x
  3. Step 3: Cross multiply
    815,331.92x = 1,222,527 × 316,112.72
  4. Step 4: Simplify right side
    815,331.92x = 386,456,335,243.44
  5. Step 5: Solve for x
    x = 386,456,335,243.44/815,331.92
  6. Step 6: Final answer
    x = 473,986.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.