Finding the Fourth Proportional to 811,847.20, 1,217,770.80 and 313,211.20
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Solution
The fourth proportional to 811,847.20, 1,217,770.80 and 313,211.20 is: 469,816.80
Step by Step Solution
- Step 1: Write the proportion equation
811,847.20 : 1,217,770.80 = 313,211.20 : x - Step 2: Convert to fraction form
811,847.20/1,217,770.80 = 313,211.20/x - Step 3: Cross multiply
811,847.20x = 1,217,770.80 × 313,211.20 - Step 4: Simplify right side
811,847.20x = 381,419,453,592.96 - Step 5: Solve for x
x = 381,419,453,592.96/811,847.20 - Step 6: Final answer
x = 469,816.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.