Finding the Fourth Proportional to 13,305,903.40, 19,958,855.10 and 4,786,517.80
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Solution
The fourth proportional to 13,305,903.40, 19,958,855.10 and 4,786,517.80 is: 7,179,776.70
Step by Step Solution
- Step 1: Write the proportion equation
13,305,903.40 : 19,958,855.10 = 4,786,517.80 : x - Step 2: Convert to fraction form
13,305,903.40/19,958,855.10 = 4,786,517.80/x - Step 3: Cross multiply
13,305,903.40x = 19,958,855.10 × 4,786,517.80 - Step 4: Simplify right side
13,305,903.40x = 95,533,415,203,770.78 - Step 5: Solve for x
x = 95,533,415,203,770.78/13,305,903.40 - Step 6: Final answer
x = 7,179,776.70
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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.