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Finding the Third Proportional to 978,267.75 and 1,286,417.25

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Solution

The third proportional to 978,267.75 and 1,286,417.25 is: 1,691,632.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,267.75 : 1,286,417.25 = 1,286,417.25 : x
  2. Step 2: Convert to fraction form
    978,267.75/1,286,417.25 = 1,286,417.25/x
  3. Step 3: Cross multiply
    978,267.75x = 1,286,417.25 × 1,286,417.25
  4. Step 4: Simplify right side
    978,267.75x = 1,654,869,341,097.56
  5. Step 5: Solve for x
    x = 1,654,869,341,097.56/978,267.75
  6. Step 6: Final answer
    x = 1,691,632.32

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.