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Finding the Third Proportional to 3,390,090 and 5,115,705

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Solution

The third proportional to 3,390,090 and 5,115,705 is: 7,719,688.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390,090 : 5,115,705 = 5,115,705 : x
  2. Step 2: Convert to fraction form
    3,390,090/5,115,705 = 5,115,705/x
  3. Step 3: Cross multiply
    3,390,090x = 5,115,705 × 5,115,705
  4. Step 4: Simplify right side
    3,390,090x = 26,170,437,647,025
  5. Step 5: Solve for x
    x = 26,170,437,647,025/3,390,090
  6. Step 6: Final answer
    x = 7,719,688.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.