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Finding the Fourth Proportional to 636,479.57, 954,515.15 and 209,919.49

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Solution

The fourth proportional to 636,479.57, 954,515.15 and 209,919.49 is: 314,811.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,479.57 : 954,515.15 = 209,919.49 : x
  2. Step 2: Convert to fraction form
    636,479.57/954,515.15 = 209,919.49/x
  3. Step 3: Cross multiply
    636,479.57x = 954,515.15 × 209,919.49
  4. Step 4: Simplify right side
    636,479.57x = 200,371,330,049.39
  5. Step 5: Solve for x
    x = 200,371,330,049.39/636,479.57
  6. Step 6: Final answer
    x = 314,811.88

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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.