Home / 711,051.14-981,259.88-388,761.61

Finding the Fourth Proportional to 711,051.14, 981,259.88 and 388,761.61

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Solution

The fourth proportional to 711,051.14, 981,259.88 and 388,761.61 is: 536,496.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,051.14 : 981,259.88 = 388,761.61 : x
  2. Step 2: Convert to fraction form
    711,051.14/981,259.88 = 388,761.61/x
  3. Step 3: Cross multiply
    711,051.14x = 981,259.88 × 388,761.61
  4. Step 4: Simplify right side
    711,051.14x = 381,476,167,097.48
  5. Step 5: Solve for x
    x = 381,476,167,097.48/711,051.14
  6. Step 6: Final answer
    x = 536,496.11

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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.