Home / 1,121,640,410.82-1,680,956,713.08-872,945,965.56

Finding the Fourth Proportional to 1,121,640,410.82, 1,680,956,713.08 and 872,945,965.56

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Solution

The fourth proportional to 1,121,640,410.82, 1,680,956,713.08 and 872,945,965.56 is: 1,308,248,496.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,640,410.82 : 1,680,956,713.08 = 872,945,965.56 : x
  2. Step 2: Convert to fraction form
    1,121,640,410.82/1,680,956,713.08 = 872,945,965.56/x
  3. Step 3: Cross multiply
    1,121,640,410.82x = 1,680,956,713.08 × 872,945,965.56
  4. Step 4: Simplify right side
    1,121,640,410.82x = 1,467,384,380,964,184,320
  5. Step 5: Solve for x
    x = 1,467,384,380,964,184,320/1,121,640,410.82
  6. Step 6: Final answer
    x = 1,308,248,496.41

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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.