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Finding the Fourth Proportional to 539,784.60, 809,288.10 and 303,199.80

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Solution

The fourth proportional to 539,784.60, 809,288.10 and 303,199.80 is: 454,581.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,784.60 : 809,288.10 = 303,199.80 : x
  2. Step 2: Convert to fraction form
    539,784.60/809,288.10 = 303,199.80/x
  3. Step 3: Cross multiply
    539,784.60x = 809,288.10 × 303,199.80
  4. Step 4: Simplify right side
    539,784.60x = 245,375,990,062.38
  5. Step 5: Solve for x
    x = 245,375,990,062.38/539,784.60
  6. Step 6: Final answer
    x = 454,581.31

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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.