Home / 815,738.32-1,223,731.92-416,161.12

Finding the Fourth Proportional to 815,738.32, 1,223,731.92 and 416,161.12

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Solution

The fourth proportional to 815,738.32, 1,223,731.92 and 416,161.12 is: 624,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,738.32 : 1,223,731.92 = 416,161.12 : x
  2. Step 2: Convert to fraction form
    815,738.32/1,223,731.92 = 416,161.12/x
  3. Step 3: Cross multiply
    815,738.32x = 1,223,731.92 × 416,161.12
  4. Step 4: Simplify right side
    815,738.32x = 509,269,646,406.95
  5. Step 5: Solve for x
    x = 509,269,646,406.95/815,738.32
  6. Step 6: Final answer
    x = 624,305.16

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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.