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Finding the Fourth Proportional to 508,600.20, 762,900.30 and 419,953.80

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Solution

The fourth proportional to 508,600.20, 762,900.30 and 419,953.80 is: 629,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,600.20 : 762,900.30 = 419,953.80 : x
  2. Step 2: Convert to fraction form
    508,600.20/762,900.30 = 419,953.80/x
  3. Step 3: Cross multiply
    508,600.20x = 762,900.30 × 419,953.80
  4. Step 4: Simplify right side
    508,600.20x = 320,382,880,006.14
  5. Step 5: Solve for x
    x = 320,382,880,006.14/508,600.20
  6. Step 6: Final answer
    x = 629,930.70

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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.