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Finding the Fourth Proportional to 636,857.44, 878,863.24 and 350,371.38

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Solution

The fourth proportional to 636,857.44, 878,863.24 and 350,371.38 is: 483,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,857.44 : 878,863.24 = 350,371.38 : x
  2. Step 2: Convert to fraction form
    636,857.44/878,863.24 = 350,371.38/x
  3. Step 3: Cross multiply
    636,857.44x = 878,863.24 × 350,371.38
  4. Step 4: Simplify right side
    636,857.44x = 307,928,520,959.83
  5. Step 5: Solve for x
    x = 307,928,520,959.83/636,857.44
  6. Step 6: Final answer
    x = 483,512.48

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1.5x scale

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.