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Finding the Fourth Proportional to 552,731.99, 762,761.21 and 311,014.42

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Solution

The fourth proportional to 552,731.99, 762,761.21 and 311,014.42 is: 429,194.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,731.99 : 762,761.21 = 311,014.42 : x
  2. Step 2: Convert to fraction form
    552,731.99/762,761.21 = 311,014.42/x
  3. Step 3: Cross multiply
    552,731.99x = 762,761.21 × 311,014.42
  4. Step 4: Simplify right side
    552,731.99x = 237,229,731,864.67
  5. Step 5: Solve for x
    x = 237,229,731,864.67/552,731.99
  6. Step 6: Final answer
    x = 429,194.87

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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.