Finding the Fourth Proportional to 1,994,167.20, 2,991,250.80 and 664,471.20
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Solution
The fourth proportional to 1,994,167.20, 2,991,250.80 and 664,471.20 is: 996,706.80
Step by Step Solution
- Step 1: Write the proportion equation
1,994,167.20 : 2,991,250.80 = 664,471.20 : x - Step 2: Convert to fraction form
1,994,167.20/2,991,250.80 = 664,471.20/x - Step 3: Cross multiply
1,994,167.20x = 2,991,250.80 × 664,471.20 - Step 4: Simplify right side
1,994,167.20x = 1,987,600,008,576.96 - Step 5: Solve for x
x = 1,987,600,008,576.96/1,994,167.20 - Step 6: Final answer
x = 996,706.80
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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.