Finding the Fourth Proportional to 5,318,917.75, 7,978,376.64 and 1,329,829.75
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Solution
The fourth proportional to 5,318,917.75, 7,978,376.64 and 1,329,829.75 is: 1,994,744.63
Step by Step Solution
- Step 1: Write the proportion equation
5,318,917.75 : 7,978,376.64 = 1,329,829.75 : x - Step 2: Convert to fraction form
5,318,917.75/7,978,376.64 = 1,329,829.75/x - Step 3: Cross multiply
5,318,917.75x = 7,978,376.64 × 1,329,829.75 - Step 4: Simplify right side
5,318,917.75x = 10,609,882,612,577.04 - Step 5: Solve for x
x = 10,609,882,612,577.04/5,318,917.75 - Step 6: Final answer
x = 1,994,744.63
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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.