Home / 840,412.28-1,260,629.34-279,446.76

Finding the Fourth Proportional to 840,412.28, 1,260,629.34 and 279,446.76

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Solution

The fourth proportional to 840,412.28, 1,260,629.34 and 279,446.76 is: 419,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,412.28 : 1,260,629.34 = 279,446.76 : x
  2. Step 2: Convert to fraction form
    840,412.28/1,260,629.34 = 279,446.76/x
  3. Step 3: Cross multiply
    840,412.28x = 1,260,629.34 × 279,446.76
  4. Step 4: Simplify right side
    840,412.28x = 352,278,784,623.94
  5. Step 5: Solve for x
    x = 352,278,784,623.94/840,412.28
  6. Step 6: Final answer
    x = 419,173.77

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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.