Home / 649,305.70-896,317.77-394,738.18

Finding the Fourth Proportional to 649,305.70, 896,317.77 and 394,738.18

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Solution

The fourth proportional to 649,305.70, 896,317.77 and 394,738.18 is: 544,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,305.70 : 896,317.77 = 394,738.18 : x
  2. Step 2: Convert to fraction form
    649,305.70/896,317.77 = 394,738.18/x
  3. Step 3: Cross multiply
    649,305.70x = 896,317.77 × 394,738.18
  4. Step 4: Simplify right side
    649,305.70x = 353,810,845,231.46
  5. Step 5: Solve for x
    x = 353,810,845,231.46/649,305.70
  6. Step 6: Final answer
    x = 544,906.42

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Double scale
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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.