Home / 990,469.98-1,485,768.18-280,552.80

Finding the Fourth Proportional to 990,469.98, 1,485,768.18 and 280,552.80

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Solution

The fourth proportional to 990,469.98, 1,485,768.18 and 280,552.80 is: 420,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,469.98 : 1,485,768.18 = 280,552.80 : x
  2. Step 2: Convert to fraction form
    990,469.98/1,485,768.18 = 280,552.80/x
  3. Step 3: Cross multiply
    990,469.98x = 1,485,768.18 × 280,552.80
  4. Step 4: Simplify right side
    990,469.98x = 416,836,423,049.90
  5. Step 5: Solve for x
    x = 416,836,423,049.90/990,469.98
  6. Step 6: Final answer
    x = 420,847.10

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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.