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Finding the Third Proportional to 1,287,719,380 and 2,789,366,072

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Solution

The third proportional to 1,287,719,380 and 2,789,366,072 is: 6,042,126,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,719,380 : 2,789,366,072 = 2,789,366,072 : x
  2. Step 2: Convert to fraction form
    1,287,719,380/2,789,366,072 = 2,789,366,072/x
  3. Step 3: Cross multiply
    1,287,719,380x = 2,789,366,072 × 2,789,366,072
  4. Step 4: Simplify right side
    1,287,719,380x = 7,780,563,083,624,709,120
  5. Step 5: Solve for x
    x = 7,780,563,083,624,709,120/1,287,719,380
  6. Step 6: Final answer
    x = 6,042,126,261.72

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.