Finding the Fourth Proportional to 428,090.29, 591,161.72 and 320,473.49
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Solution
The fourth proportional to 428,090.29, 591,161.72 and 320,473.49 is: 442,550.70
Step by Step Solution
- Step 1: Write the proportion equation
428,090.29 : 591,161.72 = 320,473.49 : x - Step 2: Convert to fraction form
428,090.29/591,161.72 = 320,473.49/x - Step 3: Cross multiply
428,090.29x = 591,161.72 × 320,473.49 - Step 4: Simplify right side
428,090.29x = 189,451,657,568.60 - Step 5: Solve for x
x = 189,451,657,568.60/428,090.29 - Step 6: Final answer
x = 442,550.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.