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Finding the Fourth Proportional to 624,989.72, 937,335.90 and 269,809.40

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Solution

The fourth proportional to 624,989.72, 937,335.90 and 269,809.40 is: 404,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,989.72 : 937,335.90 = 269,809.40 : x
  2. Step 2: Convert to fraction form
    624,989.72/937,335.90 = 269,809.40/x
  3. Step 3: Cross multiply
    624,989.72x = 937,335.90 × 269,809.40
  4. Step 4: Simplify right side
    624,989.72x = 252,902,036,777.46
  5. Step 5: Solve for x
    x = 252,902,036,777.46/624,989.72
  6. Step 6: Final answer
    x = 404,649.91

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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.