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Finding the Fourth Proportional to 515,021.20, 773,406.60 and 382,051.60

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Solution

The fourth proportional to 515,021.20, 773,406.60 and 382,051.60 is: 573,726.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,021.20 : 773,406.60 = 382,051.60 : x
  2. Step 2: Convert to fraction form
    515,021.20/773,406.60 = 382,051.60/x
  3. Step 3: Cross multiply
    515,021.20x = 773,406.60 × 382,051.60
  4. Step 4: Simplify right side
    515,021.20x = 295,481,228,980.56
  5. Step 5: Solve for x
    x = 295,481,228,980.56/515,021.20
  6. Step 6: Final answer
    x = 573,726.34

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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.