Home / 902,863.21-1,245,917.83-489,391.12

Finding the Fourth Proportional to 902,863.21, 1,245,917.83 and 489,391.12

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Solution

The fourth proportional to 902,863.21, 1,245,917.83 and 489,391.12 is: 675,341.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    902,863.21 : 1,245,917.83 = 489,391.12 : x
  2. Step 2: Convert to fraction form
    902,863.21/1,245,917.83 = 489,391.12/x
  3. Step 3: Cross multiply
    902,863.21x = 1,245,917.83 × 489,391.12
  4. Step 4: Simplify right side
    902,863.21x = 609,741,115,118.50
  5. Step 5: Solve for x
    x = 609,741,115,118.50/902,863.21
  6. Step 6: Final answer
    x = 675,341.63

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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.