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Finding the Third Proportional to 295,128 and 645,660

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Solution

The third proportional to 295,128 and 645,660 is: 1,412,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,128 : 645,660 = 645,660 : x
  2. Step 2: Convert to fraction form
    295,128/645,660 = 645,660/x
  3. Step 3: Cross multiply
    295,128x = 645,660 × 645,660
  4. Step 4: Simplify right side
    295,128x = 416,876,835,600
  5. Step 5: Solve for x
    x = 416,876,835,600/295,128
  6. Step 6: Final answer
    x = 1,412,528.92

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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.