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Finding the Fourth Proportional to 540,828.20, 809,687.10 and 330,876.20

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Solution

The fourth proportional to 540,828.20, 809,687.10 and 330,876.20 is: 495,362.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,828.20 : 809,687.10 = 330,876.20 : x
  2. Step 2: Convert to fraction form
    540,828.20/809,687.10 = 330,876.20/x
  3. Step 3: Cross multiply
    540,828.20x = 809,687.10 × 330,876.20
  4. Step 4: Simplify right side
    540,828.20x = 267,906,190,837.02
  5. Step 5: Solve for x
    x = 267,906,190,837.02/540,828.20
  6. Step 6: Final answer
    x = 495,362.84

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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.