Finding the Fourth Proportional to 821,457.40, 1,232,302.74 and 252,885.82
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Solution
The fourth proportional to 821,457.40, 1,232,302.74 and 252,885.82 is: 379,364.64
Step by Step Solution
- Step 1: Write the proportion equation
821,457.40 : 1,232,302.74 = 252,885.82 : x - Step 2: Convert to fraction form
821,457.40/1,232,302.74 = 252,885.82/x - Step 3: Cross multiply
821,457.40x = 1,232,302.74 × 252,885.82 - Step 4: Simplify right side
821,457.40x = 311,631,888,893.15 - Step 5: Solve for x
x = 311,631,888,893.15/821,457.40 - Step 6: Final answer
x = 379,364.64
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1.5x scale
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.