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Finding the Fourth Proportional to 490,672.35, 677,199.56 and 275,830.11

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Solution

The fourth proportional to 490,672.35, 677,199.56 and 275,830.11 is: 380,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,672.35 : 677,199.56 = 275,830.11 : x
  2. Step 2: Convert to fraction form
    490,672.35/677,199.56 = 275,830.11/x
  3. Step 3: Cross multiply
    490,672.35x = 677,199.56 × 275,830.11
  4. Step 4: Simplify right side
    490,672.35x = 186,792,027,747.60
  5. Step 5: Solve for x
    x = 186,792,027,747.60/490,672.35
  6. Step 6: Final answer
    x = 380,685.86

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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.