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Finding the Fourth Proportional to 605,112.80, 907,669.20 and 273,336.80

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Solution

The fourth proportional to 605,112.80, 907,669.20 and 273,336.80 is: 410,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,112.80 : 907,669.20 = 273,336.80 : x
  2. Step 2: Convert to fraction form
    605,112.80/907,669.20 = 273,336.80/x
  3. Step 3: Cross multiply
    605,112.80x = 907,669.20 × 273,336.80
  4. Step 4: Simplify right side
    605,112.80x = 248,099,394,586.56
  5. Step 5: Solve for x
    x = 248,099,394,586.56/605,112.80
  6. Step 6: Final answer
    x = 410,005.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.