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Finding the Third Proportional to 195,618 and 428,739

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Solution

The third proportional to 195,618 and 428,739 is: 939,673.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,618 : 428,739 = 428,739 : x
  2. Step 2: Convert to fraction form
    195,618/428,739 = 428,739/x
  3. Step 3: Cross multiply
    195,618x = 428,739 × 428,739
  4. Step 4: Simplify right side
    195,618x = 183,817,130,121
  5. Step 5: Solve for x
    x = 183,817,130,121/195,618
  6. Step 6: Final answer
    x = 939,673.91

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.