Home / 990,184.86-1,485,355.77-280,217.34

Finding the Fourth Proportional to 990,184.86, 1,485,355.77 and 280,217.34

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Solution

The fourth proportional to 990,184.86, 1,485,355.77 and 280,217.34 is: 420,348.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,184.86 : 1,485,355.77 = 280,217.34 : x
  2. Step 2: Convert to fraction form
    990,184.86/1,485,355.77 = 280,217.34/x
  3. Step 3: Cross multiply
    990,184.86x = 1,485,355.77 × 280,217.34
  4. Step 4: Simplify right side
    990,184.86x = 416,222,442,823.05
  5. Step 5: Solve for x
    x = 416,222,442,823.05/990,184.86
  6. Step 6: Final answer
    x = 420,348.22

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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.