Home / 990,184.11-1,485,354.65-280,216.59

Finding the Fourth Proportional to 990,184.11, 1,485,354.65 and 280,216.59

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Solution

The fourth proportional to 990,184.11, 1,485,354.65 and 280,216.59 is: 420,347.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,184.11 : 1,485,354.65 = 280,216.59 : x
  2. Step 2: Convert to fraction form
    990,184.11/1,485,354.65 = 280,216.59/x
  3. Step 3: Cross multiply
    990,184.11x = 1,485,354.65 × 280,216.59
  4. Step 4: Simplify right side
    990,184.11x = 416,221,013,562.56
  5. Step 5: Solve for x
    x = 416,221,013,562.56/990,184.11
  6. Step 6: Final answer
    x = 420,347.09

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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.