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Finding the Fourth Proportional to 521,003.20, 780,921.60 and 296,471.20

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Solution

The fourth proportional to 521,003.20, 780,921.60 and 296,471.20 is: 444,374.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,003.20 : 780,921.60 = 296,471.20 : x
  2. Step 2: Convert to fraction form
    521,003.20/780,921.60 = 296,471.20/x
  3. Step 3: Cross multiply
    521,003.20x = 780,921.60 × 296,471.20
  4. Step 4: Simplify right side
    521,003.20x = 231,520,763,857.92
  5. Step 5: Solve for x
    x = 231,520,763,857.92/521,003.20
  6. Step 6: Final answer
    x = 444,374.94

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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.