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Finding the Third Proportional to 455,344 and 684,486

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Solution

The third proportional to 455,344 and 684,486 is: 1,028,938.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,344 : 684,486 = 684,486 : x
  2. Step 2: Convert to fraction form
    455,344/684,486 = 684,486/x
  3. Step 3: Cross multiply
    455,344x = 684,486 × 684,486
  4. Step 4: Simplify right side
    455,344x = 468,521,084,196
  5. Step 5: Solve for x
    x = 468,521,084,196/455,344
  6. Step 6: Final answer
    x = 1,028,938.75

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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.