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Finding the Third Proportional to 987,680 and 2,125,240

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Solution

The third proportional to 987,680 and 2,125,240 is: 4,572,984.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,680 : 2,125,240 = 2,125,240 : x
  2. Step 2: Convert to fraction form
    987,680/2,125,240 = 2,125,240/x
  3. Step 3: Cross multiply
    987,680x = 2,125,240 × 2,125,240
  4. Step 4: Simplify right side
    987,680x = 4,516,645,057,600
  5. Step 5: Solve for x
    x = 4,516,645,057,600/987,680
  6. Step 6: Final answer
    x = 4,572,984.22

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.