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Finding the Fourth Proportional to 323,945,129.40, 485,917,694.10 and 323,945,129.40

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Solution

The fourth proportional to 323,945,129.40, 485,917,694.10 and 323,945,129.40 is: 485,917,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,945,129.40 : 485,917,694.10 = 323,945,129.40 : x
  2. Step 2: Convert to fraction form
    323,945,129.40/485,917,694.10 = 323,945,129.40/x
  3. Step 3: Cross multiply
    323,945,129.40x = 485,917,694.10 × 323,945,129.40
  4. Step 4: Simplify right side
    323,945,129.40x = 157,410,670,292,974,112
  5. Step 5: Solve for x
    x = 157,410,670,292,974,112/323,945,129.40
  6. Step 6: Final answer
    x = 485,917,694.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.