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Finding the Third Proportional to 511,618 and 767,428

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Solution

The third proportional to 511,618 and 767,428 is: 1,151,143.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,618 : 767,428 = 767,428 : x
  2. Step 2: Convert to fraction form
    511,618/767,428 = 767,428/x
  3. Step 3: Cross multiply
    511,618x = 767,428 × 767,428
  4. Step 4: Simplify right side
    511,618x = 588,945,735,184
  5. Step 5: Solve for x
    x = 588,945,735,184/511,618
  6. Step 6: Final answer
    x = 1,151,143.50

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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.