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Finding the Fourth Proportional to 636,329.22, 878,111.73 and 349,847.22

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Solution

The fourth proportional to 636,329.22, 878,111.73 and 349,847.22 is: 482,776.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,329.22 : 878,111.73 = 349,847.22 : x
  2. Step 2: Convert to fraction form
    636,329.22/878,111.73 = 349,847.22/x
  3. Step 3: Cross multiply
    636,329.22x = 878,111.73 × 349,847.22
  4. Step 4: Simplify right side
    636,329.22x = 307,204,947,589.89
  5. Step 5: Solve for x
    x = 307,204,947,589.89/636,329.22
  6. Step 6: Final answer
    x = 482,776.74

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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.