Home / 489,015.12-674,873.34-274,169.10

Finding the Fourth Proportional to 489,015.12, 674,873.34 and 274,169.10

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Solution

The fourth proportional to 489,015.12, 674,873.34 and 274,169.10 is: 378,371.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,015.12 : 674,873.34 = 274,169.10 : x
  2. Step 2: Convert to fraction form
    489,015.12/674,873.34 = 274,169.10/x
  3. Step 3: Cross multiply
    489,015.12x = 674,873.34 × 274,169.10
  4. Step 4: Simplify right side
    489,015.12x = 185,029,416,241.79
  5. Step 5: Solve for x
    x = 185,029,416,241.79/489,015.12
  6. Step 6: Final answer
    x = 378,371.56

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1.5x scale

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.