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Finding the Fourth Proportional to 552,621.94, 762,615.25 and 310,906.05

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Solution

The fourth proportional to 552,621.94, 762,615.25 and 310,906.05 is: 429,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,621.94 : 762,615.25 = 310,906.05 : x
  2. Step 2: Convert to fraction form
    552,621.94/762,615.25 = 310,906.05/x
  3. Step 3: Cross multiply
    552,621.94x = 762,615.25 × 310,906.05
  4. Step 4: Simplify right side
    552,621.94x = 237,101,693,159.04
  5. Step 5: Solve for x
    x = 237,101,693,159.04/552,621.94
  6. Step 6: Final answer
    x = 429,048.64

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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.