Home / 843,690,621.92-1,265,073,567.32-261,263,172.16

Finding the Fourth Proportional to 843,690,621.92, 1,265,073,567.32 and 261,263,172.16

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Solution

The fourth proportional to 843,690,621.92, 1,265,073,567.32 and 261,263,172.16 is: 391,751,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,690,621.92 : 1,265,073,567.32 = 261,263,172.16 : x
  2. Step 2: Convert to fraction form
    843,690,621.92/1,265,073,567.32 = 261,263,172.16/x
  3. Step 3: Cross multiply
    843,690,621.92x = 1,265,073,567.32 × 261,263,172.16
  4. Step 4: Simplify right side
    843,690,621.92x = 330,517,133,213,790,464
  5. Step 5: Solve for x
    x = 330,517,133,213,790,464/843,690,621.92
  6. Step 6: Final answer
    x = 391,751,578.87

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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.