Finding the Fourth Proportional to 790,739.73, 1,091,221.26 and 428,163.75
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Solution
The fourth proportional to 790,739.73, 1,091,221.26 and 428,163.75 is: 590,866.21
Step by Step Solution
- Step 1: Write the proportion equation
790,739.73 : 1,091,221.26 = 428,163.75 : x - Step 2: Convert to fraction form
790,739.73/1,091,221.26 = 428,163.75/x - Step 3: Cross multiply
790,739.73x = 1,091,221.26 × 428,163.75 - Step 4: Simplify right side
790,739.73x = 467,221,386,761.33 - Step 5: Solve for x
x = 467,221,386,761.33/790,739.73 - Step 6: Final answer
x = 590,866.21
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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.