Finding the Fourth Proportional to 712,231.98, 982,879.67 and 389,942.00
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Solution
The fourth proportional to 712,231.98, 982,879.67 and 389,942.00 is: 538,119.70
Step by Step Solution
- Step 1: Write the proportion equation
712,231.98 : 982,879.67 = 389,942.00 : x - Step 2: Convert to fraction form
712,231.98/982,879.67 = 389,942.00/x - Step 3: Cross multiply
712,231.98x = 982,879.67 × 389,942.00 - Step 4: Simplify right side
712,231.98x = 383,266,057,415.03 - Step 5: Solve for x
x = 383,266,057,415.03/712,231.98 - Step 6: Final answer
x = 538,119.70
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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.