Finding the Fourth Proportional to 686,343.40, 1,029,035.10 and 405,716.20
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Solution
The fourth proportional to 686,343.40, 1,029,035.10 and 405,716.20 is: 608,290.56
Step by Step Solution
- Step 1: Write the proportion equation
686,343.40 : 1,029,035.10 = 405,716.20 : x - Step 2: Convert to fraction form
686,343.40/1,029,035.10 = 405,716.20/x - Step 3: Cross multiply
686,343.40x = 1,029,035.10 × 405,716.20 - Step 4: Simplify right side
686,343.40x = 417,496,210,438.62 - Step 5: Solve for x
x = 417,496,210,438.62/686,343.40 - Step 6: Final answer
x = 608,290.56
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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.