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Finding the Third Proportional to 400,068 and 619,272

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Solution

The third proportional to 400,068 and 619,272 is: 958,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,068 : 619,272 = 619,272 : x
  2. Step 2: Convert to fraction form
    400,068/619,272 = 619,272/x
  3. Step 3: Cross multiply
    400,068x = 619,272 × 619,272
  4. Step 4: Simplify right side
    400,068x = 383,497,809,984
  5. Step 5: Solve for x
    x = 383,497,809,984/400,068
  6. Step 6: Final answer
    x = 958,581.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.