Home / 861,905,344.73-1,293,039,591.55-279,594,122.09

Finding the Fourth Proportional to 861,905,344.73, 1,293,039,591.55 and 279,594,122.09

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Solution

The fourth proportional to 861,905,344.73, 1,293,039,591.55 and 279,594,122.09 is: 419,450,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,905,344.73 : 1,293,039,591.55 = 279,594,122.09 : x
  2. Step 2: Convert to fraction form
    861,905,344.73/1,293,039,591.55 = 279,594,122.09/x
  3. Step 3: Cross multiply
    861,905,344.73x = 1,293,039,591.55 × 279,594,122.09
  4. Step 4: Simplify right side
    861,905,344.73x = 361,526,269,419,870,208
  5. Step 5: Solve for x
    x = 361,526,269,419,870,208/861,905,344.73
  6. Step 6: Final answer
    x = 419,450,084.20

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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.