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Finding the Third Proportional to 915,159 and 1,391,396

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Solution

The third proportional to 915,159 and 1,391,396 is: 2,115,460.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,159 : 1,391,396 = 1,391,396 : x
  2. Step 2: Convert to fraction form
    915,159/1,391,396 = 1,391,396/x
  3. Step 3: Cross multiply
    915,159x = 1,391,396 × 1,391,396
  4. Step 4: Simplify right side
    915,159x = 1,935,982,828,816
  5. Step 5: Solve for x
    x = 1,935,982,828,816/915,159
  6. Step 6: Final answer
    x = 2,115,460.62

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.