Home / 812,422,366.70-1,217,783,013.99-339,992,086.56

Finding the Fourth Proportional to 812,422,366.70, 1,217,783,013.99 and 339,992,086.56

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Solution

The fourth proportional to 812,422,366.70, 1,217,783,013.99 and 339,992,086.56 is: 509,632,187.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,422,366.70 : 1,217,783,013.99 = 339,992,086.56 : x
  2. Step 2: Convert to fraction form
    812,422,366.70/1,217,783,013.99 = 339,992,086.56/x
  3. Step 3: Cross multiply
    812,422,366.70x = 1,217,783,013.99 × 339,992,086.56
  4. Step 4: Simplify right side
    812,422,366.70x = 414,036,587,902,335,040
  5. Step 5: Solve for x
    x = 414,036,587,902,335,040/812,422,366.70
  6. Step 6: Final answer
    x = 509,632,187.48

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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.