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Finding the Fourth Proportional to 636,960.12, 878,983.02 and 350,453.40

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Solution

The fourth proportional to 636,960.12, 878,983.02 and 350,453.40 is: 483,613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,960.12 : 878,983.02 = 350,453.40 : x
  2. Step 2: Convert to fraction form
    636,960.12/878,983.02 = 350,453.40/x
  3. Step 3: Cross multiply
    636,960.12x = 878,983.02 × 350,453.40
  4. Step 4: Simplify right side
    636,960.12x = 308,042,587,901.27
  5. Step 5: Solve for x
    x = 308,042,587,901.27/636,960.12
  6. Step 6: Final answer
    x = 483,613.62

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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.