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Finding the Fourth Proportional to 552,880.05, 762,999.03 and 311,178.30

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Solution

The fourth proportional to 552,880.05, 762,999.03 and 311,178.30 is: 429,439.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,880.05 : 762,999.03 = 311,178.30 : x
  2. Step 2: Convert to fraction form
    552,880.05/762,999.03 = 311,178.30/x
  3. Step 3: Cross multiply
    552,880.05x = 762,999.03 × 311,178.30
  4. Step 4: Simplify right side
    552,880.05x = 237,428,741,057.05
  5. Step 5: Solve for x
    x = 237,428,741,057.05/552,880.05
  6. Step 6: Final answer
    x = 429,439.88

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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.