Finding the Fourth Proportional to 771,690.11, 1,064,665.82 and 485,231.99
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Solution
The fourth proportional to 771,690.11, 1,064,665.82 and 485,231.99 is: 669,452.55
Step by Step Solution
- Step 1: Write the proportion equation
771,690.11 : 1,064,665.82 = 485,231.99 : x - Step 2: Convert to fraction form
771,690.11/1,064,665.82 = 485,231.99/x - Step 3: Cross multiply
771,690.11x = 1,064,665.82 × 485,231.99 - Step 4: Simplify right side
771,690.11x = 516,609,910,413.33 - Step 5: Solve for x
x = 516,609,910,413.33/771,690.11 - Step 6: Final answer
x = 669,452.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.