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Finding the Fourth Proportional to 636,295.52, 878,089.92 and 349,820.48

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Solution

The fourth proportional to 636,295.52, 878,089.92 and 349,820.48 is: 482,753.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,295.52 : 878,089.92 = 349,820.48 : x
  2. Step 2: Convert to fraction form
    636,295.52/878,089.92 = 349,820.48/x
  3. Step 3: Cross multiply
    636,295.52x = 878,089.92 × 349,820.48
  4. Step 4: Simplify right side
    636,295.52x = 307,173,837,297.56
  5. Step 5: Solve for x
    x = 307,173,837,297.56/636,295.52
  6. Step 6: Final answer
    x = 482,753.42

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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.