Home / 729,039,711.70-1,006,077,451.07-394,512,198.91

Finding the Fourth Proportional to 729,039,711.70, 1,006,077,451.07 and 394,512,198.91

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Solution

The fourth proportional to 729,039,711.70, 1,006,077,451.07 and 394,512,198.91 is: 544,428,267.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,039,711.70 : 1,006,077,451.07 = 394,512,198.91 : x
  2. Step 2: Convert to fraction form
    729,039,711.70/1,006,077,451.07 = 394,512,198.91/x
  3. Step 3: Cross multiply
    729,039,711.70x = 1,006,077,451.07 × 394,512,198.91
  4. Step 4: Simplify right side
    729,039,711.70x = 396,909,827,493,864,768
  5. Step 5: Solve for x
    x = 396,909,827,493,864,768/729,039,711.70
  6. Step 6: Final answer
    x = 544,428,267.93

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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.