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Finding the Third Proportional to 418,927,909 and 888,921,256

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Solution

The third proportional to 418,927,909 and 888,921,256 is: 1,886,198,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,927,909 : 888,921,256 = 888,921,256 : x
  2. Step 2: Convert to fraction form
    418,927,909/888,921,256 = 888,921,256/x
  3. Step 3: Cross multiply
    418,927,909x = 888,921,256 × 888,921,256
  4. Step 4: Simplify right side
    418,927,909x = 790,180,999,368,617,472
  5. Step 5: Solve for x
    x = 790,180,999,368,617,472/418,927,909
  6. Step 6: Final answer
    x = 1,886,198,036.45

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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.