Home / 990,936-1,486,478.16-281,021.22

Finding the Fourth Proportional to 990,936, 1,486,478.16 and 281,021.22

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Solution

The fourth proportional to 990,936, 1,486,478.16 and 281,021.22 is: 421,552.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,936 : 1,486,478.16 = 281,021.22 : x
  2. Step 2: Convert to fraction form
    990,936/1,486,478.16 = 281,021.22/x
  3. Step 3: Cross multiply
    990,936x = 1,486,478.16 × 281,021.22
  4. Step 4: Simplify right side
    990,936x = 417,731,906,026.56
  5. Step 5: Solve for x
    x = 417,731,906,026.56/990,936
  6. Step 6: Final answer
    x = 421,552.86

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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.