Home / 821,627.57-1,233,456.26-389,757.94

Finding the Fourth Proportional to 821,627.57, 1,233,456.26 and 389,757.94

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Solution

The fourth proportional to 821,627.57, 1,233,456.26 and 389,757.94 is: 585,118.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,627.57 : 1,233,456.26 = 389,757.94 : x
  2. Step 2: Convert to fraction form
    821,627.57/1,233,456.26 = 389,757.94/x
  3. Step 3: Cross multiply
    821,627.57x = 1,233,456.26 × 389,757.94
  4. Step 4: Simplify right side
    821,627.57x = 480,749,365,945.27
  5. Step 5: Solve for x
    x = 480,749,365,945.27/821,627.57
  6. Step 6: Final answer
    x = 585,118.35

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1.5x scale

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.