Finding the Fourth Proportional to 7,881,019.80, 11,821,529.70 and 4,512,456.60
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Solution
The fourth proportional to 7,881,019.80, 11,821,529.70 and 4,512,456.60 is: 6,768,684.90
Step by Step Solution
- Step 1: Write the proportion equation
7,881,019.80 : 11,821,529.70 = 4,512,456.60 : x - Step 2: Convert to fraction form
7,881,019.80/11,821,529.70 = 4,512,456.60/x - Step 3: Cross multiply
7,881,019.80x = 11,821,529.70 × 4,512,456.60 - Step 4: Simplify right side
7,881,019.80x = 53,344,139,716,861.02 - Step 5: Solve for x
x = 53,344,139,716,861.02/7,881,019.80 - Step 6: Final answer
x = 6,768,684.90
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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.