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Finding the Third Proportional to 2,220,640 and 4,778,080

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Solution

The third proportional to 2,220,640 and 4,778,080 is: 10,280,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220,640 : 4,778,080 = 4,778,080 : x
  2. Step 2: Convert to fraction form
    2,220,640/4,778,080 = 4,778,080/x
  3. Step 3: Cross multiply
    2,220,640x = 4,778,080 × 4,778,080
  4. Step 4: Simplify right side
    2,220,640x = 22,830,048,486,400
  5. Step 5: Solve for x
    x = 22,830,048,486,400/2,220,640
  6. Step 6: Final answer
    x = 10,280,841.78

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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.