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Finding the Third Proportional to 618,720 and 1,310,660

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Solution

The third proportional to 618,720 and 1,310,660 is: 2,776,424.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,720 : 1,310,660 = 1,310,660 : x
  2. Step 2: Convert to fraction form
    618,720/1,310,660 = 1,310,660/x
  3. Step 3: Cross multiply
    618,720x = 1,310,660 × 1,310,660
  4. Step 4: Simplify right side
    618,720x = 1,717,829,635,600
  5. Step 5: Solve for x
    x = 1,717,829,635,600/618,720
  6. Step 6: Final answer
    x = 2,776,424.93

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.