Finding the Fourth Proportional to 3,431,924.21, 5,147,892.57 and 1,408,758.05
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Solution
The fourth proportional to 3,431,924.21, 5,147,892.57 and 1,408,758.05 is: 2,113,139.64
Step by Step Solution
- Step 1: Write the proportion equation
3,431,924.21 : 5,147,892.57 = 1,408,758.05 : x - Step 2: Convert to fraction form
3,431,924.21/5,147,892.57 = 1,408,758.05/x - Step 3: Cross multiply
3,431,924.21x = 5,147,892.57 × 1,408,758.05 - Step 4: Simplify right side
3,431,924.21x = 7,252,135,072,783.23 - Step 5: Solve for x
x = 7,252,135,072,783.23/3,431,924.21 - Step 6: Final answer
x = 2,113,139.64
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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.