Home / 1,278,300,666.05-1,765,273,249.86-1,208,659,640.96

Finding the Fourth Proportional to 1,278,300,666.05, 1,765,273,249.86 and 1,208,659,640.96

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Solution

The fourth proportional to 1,278,300,666.05, 1,765,273,249.86 and 1,208,659,640.96 is: 1,669,102,261.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,300,666.05 : 1,765,273,249.86 = 1,208,659,640.96 : x
  2. Step 2: Convert to fraction form
    1,278,300,666.05/1,765,273,249.86 = 1,208,659,640.96/x
  3. Step 3: Cross multiply
    1,278,300,666.05x = 1,765,273,249.86 × 1,208,659,640.96
  4. Step 4: Simplify right side
    1,278,300,666.05x = 2,133,614,532,378,789,888
  5. Step 5: Solve for x
    x = 2,133,614,532,378,789,888/1,278,300,666.05
  6. Step 6: Final answer
    x = 1,669,102,261.34

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1.5x scale

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.