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Finding the Fourth Proportional to 508,601.70, 762,902.55 and 419,955.30

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Solution

The fourth proportional to 508,601.70, 762,902.55 and 419,955.30 is: 629,932.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,601.70 : 762,902.55 = 419,955.30 : x
  2. Step 2: Convert to fraction form
    508,601.70/762,902.55 = 419,955.30/x
  3. Step 3: Cross multiply
    508,601.70x = 762,902.55 × 419,955.30
  4. Step 4: Simplify right side
    508,601.70x = 320,384,969,256.02
  5. Step 5: Solve for x
    x = 320,384,969,256.02/508,601.70
  6. Step 6: Final answer
    x = 629,932.95

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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.