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Finding the Fourth Proportional to 699,046.84, 964,675.44 and 393,123.12

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Solution

The fourth proportional to 699,046.84, 964,675.44 and 393,123.12 is: 542,504.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,046.84 : 964,675.44 = 393,123.12 : x
  2. Step 2: Convert to fraction form
    699,046.84/964,675.44 = 393,123.12/x
  3. Step 3: Cross multiply
    699,046.84x = 964,675.44 × 393,123.12
  4. Step 4: Simplify right side
    699,046.84x = 379,236,218,760.17
  5. Step 5: Solve for x
    x = 379,236,218,760.17/699,046.84
  6. Step 6: Final answer
    x = 542,504.73

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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.