Finding the Fourth Proportional to 990,436.57, 1,486,161.51 and 471,699.07
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Solution
The fourth proportional to 990,436.57, 1,486,161.51 and 471,699.07 is: 707,789.90
Step by Step Solution
- Step 1: Write the proportion equation
990,436.57 : 1,486,161.51 = 471,699.07 : x - Step 2: Convert to fraction form
990,436.57/1,486,161.51 = 471,699.07/x - Step 3: Cross multiply
990,436.57x = 1,486,161.51 × 471,699.07 - Step 4: Simplify right side
990,436.57x = 701,021,002,136.80 - Step 5: Solve for x
x = 701,021,002,136.80/990,436.57 - Step 6: Final answer
x = 707,789.90
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.