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Finding the Fourth Proportional to 552,839.99, 762,910.25 and 311,122.42

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Solution

The fourth proportional to 552,839.99, 762,910.25 and 311,122.42 is: 429,343.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,839.99 : 762,910.25 = 311,122.42 : x
  2. Step 2: Convert to fraction form
    552,839.99/762,910.25 = 311,122.42/x
  3. Step 3: Cross multiply
    552,839.99x = 762,910.25 × 311,122.42
  4. Step 4: Simplify right side
    552,839.99x = 237,358,479,759.92
  5. Step 5: Solve for x
    x = 237,358,479,759.92/552,839.99
  6. Step 6: Final answer
    x = 429,343.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.