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Finding the Fourth Proportional to 691,888,346.46, 954,805,979.67 and 378,622,544.22

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Solution

The fourth proportional to 691,888,346.46, 954,805,979.67 and 378,622,544.22 is: 522,499,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,888,346.46 : 954,805,979.67 = 378,622,544.22 : x
  2. Step 2: Convert to fraction form
    691,888,346.46/954,805,979.67 = 378,622,544.22/x
  3. Step 3: Cross multiply
    691,888,346.46x = 954,805,979.67 × 378,622,544.22
  4. Step 4: Simplify right side
    691,888,346.46x = 361,511,069,259,124,992
  5. Step 5: Solve for x
    x = 361,511,069,259,124,992/691,888,346.46
  6. Step 6: Final answer
    x = 522,499,144.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.