Home / 711,520.53-981,951.60-405,604.19

Finding the Fourth Proportional to 711,520.53, 981,951.60 and 405,604.19

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Solution

The fourth proportional to 711,520.53, 981,951.60 and 405,604.19 is: 559,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,520.53 : 981,951.60 = 405,604.19 : x
  2. Step 2: Convert to fraction form
    711,520.53/981,951.60 = 405,604.19/x
  3. Step 3: Cross multiply
    711,520.53x = 981,951.60 × 405,604.19
  4. Step 4: Simplify right side
    711,520.53x = 398,283,678,427.45
  5. Step 5: Solve for x
    x = 398,283,678,427.45/711,520.53
  6. Step 6: Final answer
    x = 559,764.14

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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.