Home / 489,278.92-675,227.64-305,626.27

Finding the Fourth Proportional to 489,278.92, 675,227.64 and 305,626.27

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Solution

The fourth proportional to 489,278.92, 675,227.64 and 305,626.27 is: 421,778.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,278.92 : 675,227.64 = 305,626.27 : x
  2. Step 2: Convert to fraction form
    489,278.92/675,227.64 = 305,626.27/x
  3. Step 3: Cross multiply
    489,278.92x = 675,227.64 × 305,626.27
  4. Step 4: Simplify right side
    489,278.92x = 206,367,305,014.10
  5. Step 5: Solve for x
    x = 206,367,305,014.10/489,278.92
  6. Step 6: Final answer
    x = 421,778.45

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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.