Home / 394,780.40-544,790.16-222,698.73

Finding the Fourth Proportional to 394,780.40, 544,790.16 and 222,698.73

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Solution

The fourth proportional to 394,780.40, 544,790.16 and 222,698.73 is: 307,320.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,780.40 : 544,790.16 = 222,698.73 : x
  2. Step 2: Convert to fraction form
    394,780.40/544,790.16 = 222,698.73/x
  3. Step 3: Cross multiply
    394,780.40x = 544,790.16 × 222,698.73
  4. Step 4: Simplify right side
    394,780.40x = 121,324,076,748.50
  5. Step 5: Solve for x
    x = 121,324,076,748.50/394,780.40
  6. Step 6: Final answer
    x = 307,320.42

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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.