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Finding the Fourth Proportional to 748,912, 1,123,368 and 250,276

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Solution

The fourth proportional to 748,912, 1,123,368 and 250,276 is: 375,414

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,912 : 1,123,368 = 250,276 : x
  2. Step 2: Convert to fraction form
    748,912/1,123,368 = 250,276/x
  3. Step 3: Cross multiply
    748,912x = 1,123,368 × 250,276
  4. Step 4: Simplify right side
    748,912x = 281,152,049,568
  5. Step 5: Solve for x
    x = 281,152,049,568/748,912
  6. Step 6: Final answer
    x = 375,414

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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.