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Finding the Fourth Proportional to 539,649.60, 809,474.40 and 274,228.80

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Solution

The fourth proportional to 539,649.60, 809,474.40 and 274,228.80 is: 411,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,649.60 : 809,474.40 = 274,228.80 : x
  2. Step 2: Convert to fraction form
    539,649.60/809,474.40 = 274,228.80/x
  3. Step 3: Cross multiply
    539,649.60x = 809,474.40 × 274,228.80
  4. Step 4: Simplify right side
    539,649.60x = 221,981,193,342.72
  5. Step 5: Solve for x
    x = 221,981,193,342.72/539,649.60
  6. Step 6: Final answer
    x = 411,343.20

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Similar ratio
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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.