Home / 428,057.28-590,990.40-275,166.72

Finding the Fourth Proportional to 428,057.28, 590,990.40 and 275,166.72

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Solution

The fourth proportional to 428,057.28, 590,990.40 and 275,166.72 is: 379,904.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,057.28 : 590,990.40 = 275,166.72 : x
  2. Step 2: Convert to fraction form
    428,057.28/590,990.40 = 275,166.72/x
  3. Step 3: Cross multiply
    428,057.28x = 590,990.40 × 275,166.72
  4. Step 4: Simplify right side
    428,057.28x = 162,620,889,919.49
  5. Step 5: Solve for x
    x = 162,620,889,919.49/428,057.28
  6. Step 6: Final answer
    x = 379,904.51

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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.