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Finding the Third Proportional to 277,344 and 428,490

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Solution

The third proportional to 277,344 and 428,490 is: 662,007.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,344 : 428,490 = 428,490 : x
  2. Step 2: Convert to fraction form
    277,344/428,490 = 428,490/x
  3. Step 3: Cross multiply
    277,344x = 428,490 × 428,490
  4. Step 4: Simplify right side
    277,344x = 183,603,680,100
  5. Step 5: Solve for x
    x = 183,603,680,100/277,344
  6. Step 6: Final answer
    x = 662,007.04

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.