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Finding the Fourth Proportional to 636,324.96, 878,106.02 and 349,842.85

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Solution

The fourth proportional to 636,324.96, 878,106.02 and 349,842.85 is: 482,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,324.96 : 878,106.02 = 349,842.85 : x
  2. Step 2: Convert to fraction form
    636,324.96/878,106.02 = 349,842.85/x
  3. Step 3: Cross multiply
    636,324.96x = 878,106.02 × 349,842.85
  4. Step 4: Simplify right side
    636,324.96x = 307,199,108,694.48
  5. Step 5: Solve for x
    x = 307,199,108,694.48/636,324.96
  6. Step 6: Final answer
    x = 482,770.80

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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.