Home / 711,081.11-981,292.02-388,791.43

Finding the Fourth Proportional to 711,081.11, 981,292.02 and 388,791.43

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Solution

The fourth proportional to 711,081.11, 981,292.02 and 388,791.43 is: 536,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,081.11 : 981,292.02 = 388,791.43 : x
  2. Step 2: Convert to fraction form
    711,081.11/981,292.02 = 388,791.43/x
  3. Step 3: Cross multiply
    711,081.11x = 981,292.02 × 388,791.43
  4. Step 4: Simplify right side
    711,081.11x = 381,517,927,703.39
  5. Step 5: Solve for x
    x = 381,517,927,703.39/711,081.11
  6. Step 6: Final answer
    x = 536,532.22

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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.