Home / 920,075.88-1,380,243.42-320,949.66

Finding the Fourth Proportional to 920,075.88, 1,380,243.42 and 320,949.66

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Solution

The fourth proportional to 920,075.88, 1,380,243.42 and 320,949.66 is: 481,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,075.88 : 1,380,243.42 = 320,949.66 : x
  2. Step 2: Convert to fraction form
    920,075.88/1,380,243.42 = 320,949.66/x
  3. Step 3: Cross multiply
    920,075.88x = 1,380,243.42 × 320,949.66
  4. Step 4: Simplify right side
    920,075.88x = 442,988,656,366.24
  5. Step 5: Solve for x
    x = 442,988,656,366.24/920,075.88
  6. Step 6: Final answer
    x = 481,469.70

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Double scale
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1.5x scale

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.