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Finding the Third Proportional to 287,892,239 and 621,658,126

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Solution

The third proportional to 287,892,239 and 621,658,126 is: 1,342,373,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,892,239 : 621,658,126 = 621,658,126 : x
  2. Step 2: Convert to fraction form
    287,892,239/621,658,126 = 621,658,126/x
  3. Step 3: Cross multiply
    287,892,239x = 621,658,126 × 621,658,126
  4. Step 4: Simplify right side
    287,892,239x = 386,458,825,621,831,872
  5. Step 5: Solve for x
    x = 386,458,825,621,831,872/287,892,239
  6. Step 6: Final answer
    x = 1,342,373,198.26

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.