Home / 711,053,036.39-981,231,028.75-393,494,175.85

Finding the Fourth Proportional to 711,053,036.39, 981,231,028.75 and 393,494,175.85

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Solution

The fourth proportional to 711,053,036.39, 981,231,028.75 and 393,494,175.85 is: 543,009,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,053,036.39 : 981,231,028.75 = 393,494,175.85 : x
  2. Step 2: Convert to fraction form
    711,053,036.39/981,231,028.75 = 393,494,175.85/x
  3. Step 3: Cross multiply
    711,053,036.39x = 981,231,028.75 × 393,494,175.85
  4. Step 4: Simplify right side
    711,053,036.39x = 386,108,694,976,428,928
  5. Step 5: Solve for x
    x = 386,108,694,976,428,928/711,053,036.39
  6. Step 6: Final answer
    x = 543,009,698.60

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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.