Home / 1,121,640,409.82-1,680,956,711.58-872,945,964.56

Finding the Fourth Proportional to 1,121,640,409.82, 1,680,956,711.58 and 872,945,964.56

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Solution

The fourth proportional to 1,121,640,409.82, 1,680,956,711.58 and 872,945,964.56 is: 1,308,248,494.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,640,409.82 : 1,680,956,711.58 = 872,945,964.56 : x
  2. Step 2: Convert to fraction form
    1,121,640,409.82/1,680,956,711.58 = 872,945,964.56/x
  3. Step 3: Cross multiply
    1,121,640,409.82x = 1,680,956,711.58 × 872,945,964.56
  4. Step 4: Simplify right side
    1,121,640,409.82x = 1,467,384,377,973,808,640
  5. Step 5: Solve for x
    x = 1,467,384,377,973,808,640/1,121,640,409.82
  6. Step 6: Final answer
    x = 1,308,248,494.91

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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.