Home / 711,517.34-981,912.30-389,241.02

Finding the Fourth Proportional to 711,517.34, 981,912.30 and 389,241.02

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Solution

The fourth proportional to 711,517.34, 981,912.30 and 389,241.02 is: 537,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,517.34 : 981,912.30 = 389,241.02 : x
  2. Step 2: Convert to fraction form
    711,517.34/981,912.30 = 389,241.02/x
  3. Step 3: Cross multiply
    711,517.34x = 981,912.30 × 389,241.02
  4. Step 4: Simplify right side
    711,517.34x = 382,200,545,202.55
  5. Step 5: Solve for x
    x = 382,200,545,202.55/711,517.34
  6. Step 6: Final answer
    x = 537,162.66

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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.