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Finding the Fourth Proportional to 539,976.60, 809,576.10 and 303,391.80

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Solution

The fourth proportional to 539,976.60, 809,576.10 and 303,391.80 is: 454,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,976.60 : 809,576.10 = 303,391.80 : x
  2. Step 2: Convert to fraction form
    539,976.60/809,576.10 = 303,391.80/x
  3. Step 3: Cross multiply
    539,976.60x = 809,576.10 × 303,391.80
  4. Step 4: Simplify right side
    539,976.60x = 245,618,750,215.98
  5. Step 5: Solve for x
    x = 245,618,750,215.98/539,976.60
  6. Step 6: Final answer
    x = 454,869.25

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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.