Home / 711,424.27-981,751.75-389,133.37

Finding the Fourth Proportional to 711,424.27, 981,751.75 and 389,133.37

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Solution

The fourth proportional to 711,424.27, 981,751.75 and 389,133.37 is: 536,996.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,424.27 : 981,751.75 = 389,133.37 : x
  2. Step 2: Convert to fraction form
    711,424.27/981,751.75 = 389,133.37/x
  3. Step 3: Cross multiply
    711,424.27x = 981,751.75 × 389,133.37
  4. Step 4: Simplify right side
    711,424.27x = 382,032,366,980.90
  5. Step 5: Solve for x
    x = 382,032,366,980.90/711,424.27
  6. Step 6: Final answer
    x = 536,996.53

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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.