Finding the Fourth Proportional to 804,827.40, 1,207,241.10 and 405,313.80
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Solution
The fourth proportional to 804,827.40, 1,207,241.10 and 405,313.80 is: 607,970.70
Step by Step Solution
- Step 1: Write the proportion equation
804,827.40 : 1,207,241.10 = 405,313.80 : x - Step 2: Convert to fraction form
804,827.40/1,207,241.10 = 405,313.80/x - Step 3: Cross multiply
804,827.40x = 1,207,241.10 × 405,313.80 - Step 4: Simplify right side
804,827.40x = 489,311,477,757.18 - Step 5: Solve for x
x = 489,311,477,757.18/804,827.40 - Step 6: Final answer
x = 607,970.70
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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.