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Finding the Third Proportional to 282,720 and 618,912

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Solution

The third proportional to 282,720 and 618,912 is: 1,354,881.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,720 : 618,912 = 618,912 : x
  2. Step 2: Convert to fraction form
    282,720/618,912 = 618,912/x
  3. Step 3: Cross multiply
    282,720x = 618,912 × 618,912
  4. Step 4: Simplify right side
    282,720x = 383,052,063,744
  5. Step 5: Solve for x
    x = 383,052,063,744/282,720
  6. Step 6: Final answer
    x = 1,354,881.38

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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.