Finding the Fourth Proportional to 821,861.10, 1,232,208.45 and 316,226.70
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Solution
The fourth proportional to 821,861.10, 1,232,208.45 and 316,226.70 is: 474,115.65
Step by Step Solution
- Step 1: Write the proportion equation
821,861.10 : 1,232,208.45 = 316,226.70 : x - Step 2: Convert to fraction form
821,861.10/1,232,208.45 = 316,226.70/x - Step 3: Cross multiply
821,861.10x = 1,232,208.45 × 316,226.70 - Step 4: Simplify right side
821,861.10x = 389,657,211,855.62 - Step 5: Solve for x
x = 389,657,211,855.62/821,861.10 - Step 6: Final answer
x = 474,115.65
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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.