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Finding the Fourth Proportional to 609,494.91, 910,535.78 and 394,511.39

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Solution

The fourth proportional to 609,494.91, 910,535.78 and 394,511.39 is: 589,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,494.91 : 910,535.78 = 394,511.39 : x
  2. Step 2: Convert to fraction form
    609,494.91/910,535.78 = 394,511.39/x
  3. Step 3: Cross multiply
    609,494.91x = 910,535.78 × 394,511.39
  4. Step 4: Simplify right side
    609,494.91x = 359,216,736,212.53
  5. Step 5: Solve for x
    x = 359,216,736,212.53/609,494.91
  6. Step 6: Final answer
    x = 589,367.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.