Home / 1,221,892,049.68-1,686,215,395.56-664,981,772.56

Finding the Fourth Proportional to 1,221,892,049.68, 1,686,215,395.56 and 664,981,772.56

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Solution

The fourth proportional to 1,221,892,049.68, 1,686,215,395.56 and 664,981,772.56 is: 917,677,222.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,892,049.68 : 1,686,215,395.56 = 664,981,772.56 : x
  2. Step 2: Convert to fraction form
    1,221,892,049.68/1,686,215,395.56 = 664,981,772.56/x
  3. Step 3: Cross multiply
    1,221,892,049.68x = 1,686,215,395.56 × 664,981,772.56
  4. Step 4: Simplify right side
    1,221,892,049.68x = 1,121,302,502,657,450,240
  5. Step 5: Solve for x
    x = 1,121,302,502,657,450,240/1,221,892,049.68
  6. Step 6: Final answer
    x = 917,677,222.76

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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.