Home / 1,278,300,674.65-1,765,273,261.72-1,208,659,649.56

Finding the Fourth Proportional to 1,278,300,674.65, 1,765,273,261.72 and 1,208,659,649.56

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Solution

The fourth proportional to 1,278,300,674.65, 1,765,273,261.72 and 1,208,659,649.56 is: 1,669,102,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,300,674.65 : 1,765,273,261.72 = 1,208,659,649.56 : x
  2. Step 2: Convert to fraction form
    1,278,300,674.65/1,765,273,261.72 = 1,208,659,649.56/x
  3. Step 3: Cross multiply
    1,278,300,674.65x = 1,765,273,261.72 × 1,208,659,649.56
  4. Step 4: Simplify right side
    1,278,300,674.65x = 2,133,614,561,888,133,376
  5. Step 5: Solve for x
    x = 2,133,614,561,888,133,376/1,278,300,674.65
  6. Step 6: Final answer
    x = 1,669,102,273.20

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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.