Finding the Fourth Proportional to 789,493.12, 1,184,305.26 and 315,920.12
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Solution
The fourth proportional to 789,493.12, 1,184,305.26 and 315,920.12 is: 473,906.42
Step by Step Solution
- Step 1: Write the proportion equation
789,493.12 : 1,184,305.26 = 315,920.12 : x - Step 2: Convert to fraction form
789,493.12/1,184,305.26 = 315,920.12/x - Step 3: Cross multiply
789,493.12x = 1,184,305.26 × 315,920.12 - Step 4: Simplify right side
789,493.12x = 374,145,859,855.83 - Step 5: Solve for x
x = 374,145,859,855.83/789,493.12 - Step 6: Final answer
x = 473,906.42
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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.