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Finding the Fourth Proportional to 1,422,436, 2,133,654 and 371,812

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Solution

The fourth proportional to 1,422,436, 2,133,654 and 371,812 is: 557,718

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,436 : 2,133,654 = 371,812 : x
  2. Step 2: Convert to fraction form
    1,422,436/2,133,654 = 371,812/x
  3. Step 3: Cross multiply
    1,422,436x = 2,133,654 × 371,812
  4. Step 4: Simplify right side
    1,422,436x = 793,318,161,048
  5. Step 5: Solve for x
    x = 793,318,161,048/1,422,436
  6. Step 6: Final answer
    x = 557,718

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.