Finding the Fourth Proportional to 2,115,212.58, 2,919,453.57 and 1,299,843.90
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Solution
The fourth proportional to 2,115,212.58, 2,919,453.57 and 1,299,843.90 is: 1,794,067.39
Step by Step Solution
- Step 1: Write the proportion equation
2,115,212.58 : 2,919,453.57 = 1,299,843.90 : x - Step 2: Convert to fraction form
2,115,212.58/2,919,453.57 = 1,299,843.90/x - Step 3: Cross multiply
2,115,212.58x = 2,919,453.57 × 1,299,843.90 - Step 4: Simplify right side
2,115,212.58x = 3,794,833,914,297.72 - Step 5: Solve for x
x = 3,794,833,914,297.72/2,115,212.58 - Step 6: Final answer
x = 1,794,067.39
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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.