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Finding the Fourth Proportional to 515,755.62, 773,629.95 and 280,592.98

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Solution

The fourth proportional to 515,755.62, 773,629.95 and 280,592.98 is: 420,887.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,755.62 : 773,629.95 = 280,592.98 : x
  2. Step 2: Convert to fraction form
    515,755.62/773,629.95 = 280,592.98/x
  3. Step 3: Cross multiply
    515,755.62x = 773,629.95 × 280,592.98
  4. Step 4: Simplify right side
    515,755.62x = 217,075,132,205.90
  5. Step 5: Solve for x
    x = 217,075,132,205.90/515,755.62
  6. Step 6: Final answer
    x = 420,887.58

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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.