Home / 711,548.75-981,960.57-405,619.58

Finding the Fourth Proportional to 711,548.75, 981,960.57 and 405,619.58

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Solution

The fourth proportional to 711,548.75, 981,960.57 and 405,619.58 is: 559,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,548.75 : 981,960.57 = 405,619.58 : x
  2. Step 2: Convert to fraction form
    711,548.75/981,960.57 = 405,619.58/x
  3. Step 3: Cross multiply
    711,548.75x = 981,960.57 × 405,619.58
  4. Step 4: Simplify right side
    711,548.75x = 398,302,436,434.86
  5. Step 5: Solve for x
    x = 398,302,436,434.86/711,548.75
  6. Step 6: Final answer
    x = 559,768.30

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Double scale
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1.5x scale

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.