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Finding the Fourth Proportional to 636,366.05, 878,162.66 and 349,883.90

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Solution

The fourth proportional to 636,366.05, 878,162.66 and 349,883.90 is: 482,827.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,366.05 : 878,162.66 = 349,883.90 : x
  2. Step 2: Convert to fraction form
    636,366.05/878,162.66 = 349,883.90/x
  3. Step 3: Cross multiply
    636,366.05x = 878,162.66 × 349,883.90
  4. Step 4: Simplify right side
    636,366.05x = 307,254,970,174.94
  5. Step 5: Solve for x
    x = 307,254,970,174.94/636,366.05
  6. Step 6: Final answer
    x = 482,827.41

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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.