Home / 711,584.34-981,982.89-389,288.58

Finding the Fourth Proportional to 711,584.34, 981,982.89 and 389,288.58

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Solution

The fourth proportional to 711,584.34, 981,982.89 and 389,288.58 is: 537,216.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,584.34 : 981,982.89 = 389,288.58 : x
  2. Step 2: Convert to fraction form
    711,584.34/981,982.89 = 389,288.58/x
  3. Step 3: Cross multiply
    711,584.34x = 981,982.89 × 389,288.58
  4. Step 4: Simplify right side
    711,584.34x = 382,274,724,832.40
  5. Step 5: Solve for x
    x = 382,274,724,832.40/711,584.34
  6. Step 6: Final answer
    x = 537,216.33

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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.