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Finding the Third Proportional to 817,480 and 1,275,888

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Solution

The third proportional to 817,480 and 1,275,888 is: 1,991,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,480 : 1,275,888 = 1,275,888 : x
  2. Step 2: Convert to fraction form
    817,480/1,275,888 = 1,275,888/x
  3. Step 3: Cross multiply
    817,480x = 1,275,888 × 1,275,888
  4. Step 4: Simplify right side
    817,480x = 1,627,890,188,544
  5. Step 5: Solve for x
    x = 1,627,890,188,544/817,480
  6. Step 6: Final answer
    x = 1,991,351.70

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.