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Finding the Third Proportional to 399,707,022 and 891,319,644

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Solution

The third proportional to 399,707,022 and 891,319,644 is: 1,987,582,564.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,707,022 : 891,319,644 = 891,319,644 : x
  2. Step 2: Convert to fraction form
    399,707,022/891,319,644 = 891,319,644/x
  3. Step 3: Cross multiply
    399,707,022x = 891,319,644 × 891,319,644
  4. Step 4: Simplify right side
    399,707,022x = 794,450,707,780,286,720
  5. Step 5: Solve for x
    x = 794,450,707,780,286,720/399,707,022
  6. Step 6: Final answer
    x = 1,987,582,564.36

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.