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Finding the Fourth Proportional to 636,377.48, 878,204.21 and 349,916.01

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Solution

The fourth proportional to 636,377.48, 878,204.21 and 349,916.01 is: 482,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,377.48 : 878,204.21 = 349,916.01 : x
  2. Step 2: Convert to fraction form
    636,377.48/878,204.21 = 349,916.01/x
  3. Step 3: Cross multiply
    636,377.48x = 878,204.21 × 349,916.01
  4. Step 4: Simplify right side
    636,377.48x = 307,297,713,128.40
  5. Step 5: Solve for x
    x = 307,297,713,128.40/636,377.48
  6. Step 6: Final answer
    x = 482,885.90

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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.