Home / 711,234.66-981,520.92-405,304.50

Finding the Fourth Proportional to 711,234.66, 981,520.92 and 405,304.50

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Solution

The fourth proportional to 711,234.66, 981,520.92 and 405,304.50 is: 559,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,234.66 : 981,520.92 = 405,304.50 : x
  2. Step 2: Convert to fraction form
    711,234.66/981,520.92 = 405,304.50/x
  3. Step 3: Cross multiply
    711,234.66x = 981,520.92 × 405,304.50
  4. Step 4: Simplify right side
    711,234.66x = 397,814,845,720.14
  5. Step 5: Solve for x
    x = 397,814,845,720.14/711,234.66
  6. Step 6: Final answer
    x = 559,329.95

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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.