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Finding the Fourth Proportional to 699,014.84, 964,527.94 and 393,072.98

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Solution

The fourth proportional to 699,014.84, 964,527.94 and 393,072.98 is: 542,377.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,014.84 : 964,527.94 = 393,072.98 : x
  2. Step 2: Convert to fraction form
    699,014.84/964,527.94 = 393,072.98/x
  3. Step 3: Cross multiply
    699,014.84x = 964,527.94 × 393,072.98
  4. Step 4: Simplify right side
    699,014.84x = 379,129,864,881.06
  5. Step 5: Solve for x
    x = 379,129,864,881.06/699,014.84
  6. Step 6: Final answer
    x = 542,377.42

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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.