Home / 990,791.20-1,486,184.07-280,825.39

Finding the Fourth Proportional to 990,791.20, 1,486,184.07 and 280,825.39

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Solution

The fourth proportional to 990,791.20, 1,486,184.07 and 280,825.39 is: 421,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,791.20 : 1,486,184.07 = 280,825.39 : x
  2. Step 2: Convert to fraction form
    990,791.20/1,486,184.07 = 280,825.39/x
  3. Step 3: Cross multiply
    990,791.20x = 1,486,184.07 × 280,825.39
  4. Step 4: Simplify right side
    990,791.20x = 417,358,221,069.54
  5. Step 5: Solve for x
    x = 417,358,221,069.54/990,791.20
  6. Step 6: Final answer
    x = 421,237.31

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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.