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Finding the Fourth Proportional to 624,649.20, 937,411.20 and 269,917.80

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Solution

The fourth proportional to 624,649.20, 937,411.20 and 269,917.80 is: 405,065.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,649.20 : 937,411.20 = 269,917.80 : x
  2. Step 2: Convert to fraction form
    624,649.20/937,411.20 = 269,917.80/x
  3. Step 3: Cross multiply
    624,649.20x = 937,411.20 × 269,917.80
  4. Step 4: Simplify right side
    624,649.20x = 253,023,968,799.36
  5. Step 5: Solve for x
    x = 253,023,968,799.36/624,649.20
  6. Step 6: Final answer
    x = 405,065.71

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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.