Home / 699,348.78-965,099.81-393,425.35

Finding the Fourth Proportional to 699,348.78, 965,099.81 and 393,425.35

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Solution

The fourth proportional to 699,348.78, 965,099.81 and 393,425.35 is: 542,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,348.78 : 965,099.81 = 393,425.35 : x
  2. Step 2: Convert to fraction form
    699,348.78/965,099.81 = 393,425.35/x
  3. Step 3: Cross multiply
    699,348.78x = 965,099.81 × 393,425.35
  4. Step 4: Simplify right side
    699,348.78x = 379,694,729,105.00
  5. Step 5: Solve for x
    x = 379,694,729,105.00/699,348.78
  6. Step 6: Final answer
    x = 542,926.13

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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.