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Finding the Fourth Proportional to 636,076.72, 877,787.78 and 349,626.16

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Solution

The fourth proportional to 636,076.72, 877,787.78 and 349,626.16 is: 482,485.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,076.72 : 877,787.78 = 349,626.16 : x
  2. Step 2: Convert to fraction form
    636,076.72/877,787.78 = 349,626.16/x
  3. Step 3: Cross multiply
    636,076.72x = 877,787.78 × 349,626.16
  4. Step 4: Simplify right side
    636,076.72x = 306,897,565,553.32
  5. Step 5: Solve for x
    x = 306,897,565,553.32/636,076.72
  6. Step 6: Final answer
    x = 482,485.14

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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.