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Finding the Third Proportional to 487,122 and 764,347

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Solution

The third proportional to 487,122 and 764,347 is: 1,199,342.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,122 : 764,347 = 764,347 : x
  2. Step 2: Convert to fraction form
    487,122/764,347 = 764,347/x
  3. Step 3: Cross multiply
    487,122x = 764,347 × 764,347
  4. Step 4: Simplify right side
    487,122x = 584,226,336,409
  5. Step 5: Solve for x
    x = 584,226,336,409/487,122
  6. Step 6: Final answer
    x = 1,199,342.95

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.