Home / 990,157.20-1,485,292.76-280,125.76

Finding the Fourth Proportional to 990,157.20, 1,485,292.76 and 280,125.76

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Solution

The fourth proportional to 990,157.20, 1,485,292.76 and 280,125.76 is: 420,204.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,157.20 : 1,485,292.76 = 280,125.76 : x
  2. Step 2: Convert to fraction form
    990,157.20/1,485,292.76 = 280,125.76/x
  3. Step 3: Cross multiply
    990,157.20x = 1,485,292.76 × 280,125.76
  4. Step 4: Simplify right side
    990,157.20x = 416,068,763,217.50
  5. Step 5: Solve for x
    x = 416,068,763,217.50/990,157.20
  6. Step 6: Final answer
    x = 420,204.75

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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.