Home / 741,640.60-1,112,898.30-489,649.60

Finding the Fourth Proportional to 741,640.60, 1,112,898.30 and 489,649.60

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Solution

The fourth proportional to 741,640.60, 1,112,898.30 and 489,649.60 is: 734,763.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    741,640.60 : 1,112,898.30 = 489,649.60 : x
  2. Step 2: Convert to fraction form
    741,640.60/1,112,898.30 = 489,649.60/x
  3. Step 3: Cross multiply
    741,640.60x = 1,112,898.30 × 489,649.60
  4. Step 4: Simplify right side
    741,640.60x = 544,930,207,435.68
  5. Step 5: Solve for x
    x = 544,930,207,435.68/741,640.60
  6. Step 6: Final answer
    x = 734,763.18

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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.