Home / 428,579.10-591,446.34-234,982.76

Finding the Fourth Proportional to 428,579.10, 591,446.34 and 234,982.76

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Solution

The fourth proportional to 428,579.10, 591,446.34 and 234,982.76 is: 324,280.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,579.10 : 591,446.34 = 234,982.76 : x
  2. Step 2: Convert to fraction form
    428,579.10/591,446.34 = 234,982.76/x
  3. Step 3: Cross multiply
    428,579.10x = 591,446.34 × 234,982.76
  4. Step 4: Simplify right side
    428,579.10x = 138,979,690,407.87
  5. Step 5: Solve for x
    x = 138,979,690,407.87/428,579.10
  6. Step 6: Final answer
    x = 324,280.14

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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.