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Finding the Fourth Proportional to 552,497.31, 762,362.64 and 310,839.29

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Solution

The fourth proportional to 552,497.31, 762,362.64 and 310,839.29 is: 428,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,497.31 : 762,362.64 = 310,839.29 : x
  2. Step 2: Convert to fraction form
    552,497.31/762,362.64 = 310,839.29/x
  3. Step 3: Cross multiply
    552,497.31x = 762,362.64 × 310,839.29
  4. Step 4: Simplify right side
    552,497.31x = 236,972,257,928.31
  5. Step 5: Solve for x
    x = 236,972,257,928.31/552,497.31
  6. Step 6: Final answer
    x = 428,911.15

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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.