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Finding the Fourth Proportional to 636,857.69, 878,863.58 and 350,371.63

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Solution

The fourth proportional to 636,857.69, 878,863.58 and 350,371.63 is: 483,512.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,857.69 : 878,863.58 = 350,371.63 : x
  2. Step 2: Convert to fraction form
    636,857.69/878,863.58 = 350,371.63/x
  3. Step 3: Cross multiply
    636,857.69x = 878,863.58 × 350,371.63
  4. Step 4: Simplify right side
    636,857.69x = 307,928,861,553.85
  5. Step 5: Solve for x
    x = 307,928,861,553.85/636,857.69
  6. Step 6: Final answer
    x = 483,512.83

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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.