Home / 990,938-1,486,481.16-281,023.22

Finding the Fourth Proportional to 990,938, 1,486,481.16 and 281,023.22

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Solution

The fourth proportional to 990,938, 1,486,481.16 and 281,023.22 is: 421,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,938 : 1,486,481.16 = 281,023.22 : x
  2. Step 2: Convert to fraction form
    990,938/1,486,481.16 = 281,023.22/x
  3. Step 3: Cross multiply
    990,938x = 1,486,481.16 × 281,023.22
  4. Step 4: Simplify right side
    990,938x = 417,735,722,052.54
  5. Step 5: Solve for x
    x = 417,735,722,052.54/990,938
  6. Step 6: Final answer
    x = 421,555.86

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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.