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Finding the Fourth Proportional to 490,672.73, 677,200.07 and 275,830.49

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Solution

The fourth proportional to 490,672.73, 677,200.07 and 275,830.49 is: 380,686.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,672.73 : 677,200.07 = 275,830.49 : x
  2. Step 2: Convert to fraction form
    490,672.73/677,200.07 = 275,830.49/x
  3. Step 3: Cross multiply
    490,672.73x = 677,200.07 × 275,830.49
  4. Step 4: Simplify right side
    490,672.73x = 186,792,424,439.71
  5. Step 5: Solve for x
    x = 186,792,424,439.71/490,672.73
  6. Step 6: Final answer
    x = 380,686.38

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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.