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Finding the Fourth Proportional to 552,243.41, 762,080.75 and 310,519.76

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Solution

The fourth proportional to 552,243.41, 762,080.75 and 310,519.76 is: 428,508.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,243.41 : 762,080.75 = 310,519.76 : x
  2. Step 2: Convert to fraction form
    552,243.41/762,080.75 = 310,519.76/x
  3. Step 3: Cross multiply
    552,243.41x = 762,080.75 × 310,519.76
  4. Step 4: Simplify right side
    552,243.41x = 236,641,126,227.62
  5. Step 5: Solve for x
    x = 236,641,126,227.62/552,243.41
  6. Step 6: Final answer
    x = 428,508.74

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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.