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Finding the Fourth Proportional to 636,806.56, 878,800.30 and 364,869

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Solution

The fourth proportional to 636,806.56, 878,800.30 and 364,869 is: 503,523.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,806.56 : 878,800.30 = 364,869 : x
  2. Step 2: Convert to fraction form
    636,806.56/878,800.30 = 364,869/x
  3. Step 3: Cross multiply
    636,806.56x = 878,800.30 × 364,869
  4. Step 4: Simplify right side
    636,806.56x = 320,646,986,660.70
  5. Step 5: Solve for x
    x = 320,646,986,660.70/636,806.56
  6. Step 6: Final answer
    x = 503,523.37

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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.