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Finding the Fourth Proportional to 655,772.58, 905,012.51 and 365,403.42

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Solution

The fourth proportional to 655,772.58, 905,012.51 and 365,403.42 is: 504,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,772.58 : 905,012.51 = 365,403.42 : x
  2. Step 2: Convert to fraction form
    655,772.58/905,012.51 = 365,403.42/x
  3. Step 3: Cross multiply
    655,772.58x = 905,012.51 × 365,403.42
  4. Step 4: Simplify right side
    655,772.58x = 330,694,664,469.77
  5. Step 5: Solve for x
    x = 330,694,664,469.77/655,772.58
  6. Step 6: Final answer
    x = 504,282.54

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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.