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Finding the Fourth Proportional to 636,324.42, 878,133.60 and 349,846.50

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Solution

The fourth proportional to 636,324.42, 878,133.60 and 349,846.50 is: 482,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,324.42 : 878,133.60 = 349,846.50 : x
  2. Step 2: Convert to fraction form
    636,324.42/878,133.60 = 349,846.50/x
  3. Step 3: Cross multiply
    636,324.42x = 878,133.60 × 349,846.50
  4. Step 4: Simplify right side
    636,324.42x = 307,211,966,492.40
  5. Step 5: Solve for x
    x = 307,211,966,492.40/636,324.42
  6. Step 6: Final answer
    x = 482,791.41

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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.