Home / 990,152.60-1,485,286.16-280,121.16

Finding the Fourth Proportional to 990,152.60, 1,485,286.16 and 280,121.16

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Solution

The fourth proportional to 990,152.60, 1,485,286.16 and 280,121.16 is: 420,197.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,152.60 : 1,485,286.16 = 280,121.16 : x
  2. Step 2: Convert to fraction form
    990,152.60/1,485,286.16 = 280,121.16/x
  3. Step 3: Cross multiply
    990,152.60x = 1,485,286.16 × 280,121.16
  4. Step 4: Simplify right side
    990,152.60x = 416,060,082,071.15
  5. Step 5: Solve for x
    x = 416,060,082,071.15/990,152.60
  6. Step 6: Final answer
    x = 420,197.94

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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.