Home / 820,692.87-1,231,617.47-288,255.39

Finding the Fourth Proportional to 820,692.87, 1,231,617.47 and 288,255.39

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Solution

The fourth proportional to 820,692.87, 1,231,617.47 and 288,255.39 is: 432,586.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,692.87 : 1,231,617.47 = 288,255.39 : x
  2. Step 2: Convert to fraction form
    820,692.87/1,231,617.47 = 288,255.39/x
  3. Step 3: Cross multiply
    820,692.87x = 1,231,617.47 × 288,255.39
  4. Step 4: Simplify right side
    820,692.87x = 355,020,372,704.39
  5. Step 5: Solve for x
    x = 355,020,372,704.39/820,692.87
  6. Step 6: Final answer
    x = 432,586.15

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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.