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Finding the Third Proportional to 7,809,842,128 and 11,897,487,555

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Solution

The third proportional to 7,809,842,128 and 11,897,487,555 is: 18,124,593,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809,842,128 : 11,897,487,555 = 11,897,487,555 : x
  2. Step 2: Convert to fraction form
    7,809,842,128/11,897,487,555 = 11,897,487,555/x
  3. Step 3: Cross multiply
    7,809,842,128x = 11,897,487,555 × 11,897,487,555
  4. Step 4: Simplify right side
    7,809,842,128x = 141,550,210,121,379,872,768
  5. Step 5: Solve for x
    x = 141,550,210,121,379,872,768/7,809,842,128
  6. Step 6: Final answer
    x = 18,124,593,020.12

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.