Finding the Fourth Proportional to 691,709.80, 1,036,175.16 and 344,447.08
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Solution
The fourth proportional to 691,709.80, 1,036,175.16 and 344,447.08 is: 515,978.68
Step by Step Solution
- Step 1: Write the proportion equation
691,709.80 : 1,036,175.16 = 344,447.08 : x - Step 2: Convert to fraction form
691,709.80/1,036,175.16 = 344,447.08/x - Step 3: Cross multiply
691,709.80x = 1,036,175.16 × 344,447.08 - Step 4: Simplify right side
691,709.80x = 356,907,508,230.53 - Step 5: Solve for x
x = 356,907,508,230.53/691,709.80 - Step 6: Final answer
x = 515,978.68
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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.