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Finding the Fourth Proportional to 624,043.40, 936,468.30 and 343,761.80

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Solution

The fourth proportional to 624,043.40, 936,468.30 and 343,761.80 is: 515,864.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,043.40 : 936,468.30 = 343,761.80 : x
  2. Step 2: Convert to fraction form
    624,043.40/936,468.30 = 343,761.80/x
  3. Step 3: Cross multiply
    624,043.40x = 936,468.30 × 343,761.80
  4. Step 4: Simplify right side
    624,043.40x = 321,922,028,450.94
  5. Step 5: Solve for x
    x = 321,922,028,450.94/624,043.40
  6. Step 6: Final answer
    x = 515,864.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.