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Finding the Third Proportional to 401,865 and 547,272

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Solution

The third proportional to 401,865 and 547,272 is: 745,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,865 : 547,272 = 547,272 : x
  2. Step 2: Convert to fraction form
    401,865/547,272 = 547,272/x
  3. Step 3: Cross multiply
    401,865x = 547,272 × 547,272
  4. Step 4: Simplify right side
    401,865x = 299,506,641,984
  5. Step 5: Solve for x
    x = 299,506,641,984/401,865
  6. Step 6: Final answer
    x = 745,291.68

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.