Home / 685,318.29-945,838.20-394,874.22

Finding the Fourth Proportional to 685,318.29, 945,838.20 and 394,874.22

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Solution

The fourth proportional to 685,318.29, 945,838.20 and 394,874.22 is: 544,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,318.29 : 945,838.20 = 394,874.22 : x
  2. Step 2: Convert to fraction form
    685,318.29/945,838.20 = 394,874.22/x
  3. Step 3: Cross multiply
    685,318.29x = 945,838.20 × 394,874.22
  4. Step 4: Simplify right side
    685,318.29x = 373,487,121,471.20
  5. Step 5: Solve for x
    x = 373,487,121,471.20/685,318.29
  6. Step 6: Final answer
    x = 544,983.44

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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.