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Finding the Fourth Proportional to 624,548, 861,993 and 356,276

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Solution

The fourth proportional to 624,548, 861,993 and 356,276 is: 491,727.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,548 : 861,993 = 356,276 : x
  2. Step 2: Convert to fraction form
    624,548/861,993 = 356,276/x
  3. Step 3: Cross multiply
    624,548x = 861,993 × 356,276
  4. Step 4: Simplify right side
    624,548x = 307,107,418,068
  5. Step 5: Solve for x
    x = 307,107,418,068/624,548
  6. Step 6: Final answer
    x = 491,727.49

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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.