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Finding the Fourth Proportional to 479,644.48, 661,911.49 and 264,786.31

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Solution

The fourth proportional to 479,644.48, 661,911.49 and 264,786.31 is: 365,406.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,644.48 : 661,911.49 = 264,786.31 : x
  2. Step 2: Convert to fraction form
    479,644.48/661,911.49 = 264,786.31/x
  3. Step 3: Cross multiply
    479,644.48x = 661,911.49 × 264,786.31
  4. Step 4: Simplify right side
    479,644.48x = 175,265,099,990.89
  5. Step 5: Solve for x
    x = 175,265,099,990.89/479,644.48
  6. Step 6: Final answer
    x = 365,406.27

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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.