Home / 711,283.15-981,585.07-389,013.97

Finding the Fourth Proportional to 711,283.15, 981,585.07 and 389,013.97

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Solution

The fourth proportional to 711,283.15, 981,585.07 and 389,013.97 is: 536,847.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,283.15 : 981,585.07 = 389,013.97 : x
  2. Step 2: Convert to fraction form
    711,283.15/981,585.07 = 389,013.97/x
  3. Step 3: Cross multiply
    711,283.15x = 981,585.07 × 389,013.97
  4. Step 4: Simplify right side
    711,283.15x = 381,850,304,973.43
  5. Step 5: Solve for x
    x = 381,850,304,973.43/711,283.15
  6. Step 6: Final answer
    x = 536,847.11

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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.