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Finding the Fourth Proportional to 636,468.84, 878,294.34 and 349,981.56

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Solution

The fourth proportional to 636,468.84, 878,294.34 and 349,981.56 is: 482,956.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,468.84 : 878,294.34 = 349,981.56 : x
  2. Step 2: Convert to fraction form
    636,468.84/878,294.34 = 349,981.56/x
  3. Step 3: Cross multiply
    636,468.84x = 878,294.34 × 349,981.56
  4. Step 4: Simplify right side
    636,468.84x = 307,386,823,252.37
  5. Step 5: Solve for x
    x = 307,386,823,252.37/636,468.84
  6. Step 6: Final answer
    x = 482,956.59

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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.