Home / 921,990.63-1,380,377.94-488,720.87

Finding the Fourth Proportional to 921,990.63, 1,380,377.94 and 488,720.87

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Solution

The fourth proportional to 921,990.63, 1,380,377.94 and 488,720.87 is: 731,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,990.63 : 1,380,377.94 = 488,720.87 : x
  2. Step 2: Convert to fraction form
    921,990.63/1,380,377.94 = 488,720.87/x
  3. Step 3: Cross multiply
    921,990.63x = 1,380,377.94 × 488,720.87
  4. Step 4: Simplify right side
    921,990.63x = 674,619,507,765.61
  5. Step 5: Solve for x
    x = 674,619,507,765.61/921,990.63
  6. Step 6: Final answer
    x = 731,698.88

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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.