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Finding the Third Proportional to 9,920,644 and 21,258,455

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Solution

The third proportional to 9,920,644 and 21,258,455 is: 45,553,686.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920,644 : 21,258,455 = 21,258,455 : x
  2. Step 2: Convert to fraction form
    9,920,644/21,258,455 = 21,258,455/x
  3. Step 3: Cross multiply
    9,920,644x = 21,258,455 × 21,258,455
  4. Step 4: Simplify right side
    9,920,644x = 451,921,908,987,025
  5. Step 5: Solve for x
    x = 451,921,908,987,025/9,920,644
  6. Step 6: Final answer
    x = 45,553,686.74

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.