Home / 800,790.21-1,105,090.29-438,213.96

Finding the Fourth Proportional to 800,790.21, 1,105,090.29 and 438,213.96

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Solution

The fourth proportional to 800,790.21, 1,105,090.29 and 438,213.96 is: 604,735.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,790.21 : 1,105,090.29 = 438,213.96 : x
  2. Step 2: Convert to fraction form
    800,790.21/1,105,090.29 = 438,213.96/x
  3. Step 3: Cross multiply
    800,790.21x = 1,105,090.29 × 438,213.96
  4. Step 4: Simplify right side
    800,790.21x = 484,265,992,138.45
  5. Step 5: Solve for x
    x = 484,265,992,138.45/800,790.21
  6. Step 6: Final answer
    x = 604,735.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.