Finding the Fourth Proportional to 6,687,928.80, 9,230,129.64 and 3,971,674.80
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Solution
The fourth proportional to 6,687,928.80, 9,230,129.64 and 3,971,674.80 is: 5,481,379.12
Step by Step Solution
- Step 1: Write the proportion equation
6,687,928.80 : 9,230,129.64 = 3,971,674.80 : x - Step 2: Convert to fraction form
6,687,928.80/9,230,129.64 = 3,971,674.80/x - Step 3: Cross multiply
6,687,928.80x = 9,230,129.64 × 3,971,674.80 - Step 4: Simplify right side
6,687,928.80x = 36,659,073,291,921.07 - Step 5: Solve for x
x = 36,659,073,291,921.07/6,687,928.80 - Step 6: Final answer
x = 5,481,379.12
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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.