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Finding the Fourth Proportional to 624,549, 861,994.38 and 356,277

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Solution

The fourth proportional to 624,549, 861,994.38 and 356,277 is: 491,728.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,549 : 861,994.38 = 356,277 : x
  2. Step 2: Convert to fraction form
    624,549/861,994.38 = 356,277/x
  3. Step 3: Cross multiply
    624,549x = 861,994.38 × 356,277
  4. Step 4: Simplify right side
    624,549x = 307,108,771,723.26
  5. Step 5: Solve for x
    x = 307,108,771,723.26/624,549
  6. Step 6: Final answer
    x = 491,728.87

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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.