Home / 921,991.89-1,380,379.78-488,722.11

Finding the Fourth Proportional to 921,991.89, 1,380,379.78 and 488,722.11

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Solution

The fourth proportional to 921,991.89, 1,380,379.78 and 488,722.11 is: 731,700.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,991.89 : 1,380,379.78 = 488,722.11 : x
  2. Step 2: Convert to fraction form
    921,991.89/1,380,379.78 = 488,722.11/x
  3. Step 3: Cross multiply
    921,991.89x = 1,380,379.78 × 488,722.11
  4. Step 4: Simplify right side
    921,991.89x = 674,622,116,239.33
  5. Step 5: Solve for x
    x = 674,622,116,239.33/921,991.89
  6. Step 6: Final answer
    x = 731,700.71

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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.