Home / 490,905.60-677,414.40-276,076.80

Finding the Fourth Proportional to 490,905.60, 677,414.40 and 276,076.80

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Solution

The fourth proportional to 490,905.60, 677,414.40 and 276,076.80 is: 380,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,905.60 : 677,414.40 = 276,076.80 : x
  2. Step 2: Convert to fraction form
    490,905.60/677,414.40 = 276,076.80/x
  3. Step 3: Cross multiply
    490,905.60x = 677,414.40 × 276,076.80
  4. Step 4: Simplify right side
    490,905.60x = 187,018,399,825.92
  5. Step 5: Solve for x
    x = 187,018,399,825.92/490,905.60
  6. Step 6: Final answer
    x = 380,966.12

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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.