Home / 485,986.26-670,648.10-271,120.80

Finding the Fourth Proportional to 485,986.26, 670,648.10 and 271,120.80

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Solution

The fourth proportional to 485,986.26, 670,648.10 and 271,120.80 is: 374,139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,986.26 : 670,648.10 = 271,120.80 : x
  2. Step 2: Convert to fraction form
    485,986.26/670,648.10 = 271,120.80/x
  3. Step 3: Cross multiply
    485,986.26x = 670,648.10 × 271,120.80
  4. Step 4: Simplify right side
    485,986.26x = 181,826,649,390.48
  5. Step 5: Solve for x
    x = 181,826,649,390.48/485,986.26
  6. Step 6: Final answer
    x = 374,139.49

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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.