Finding the Fourth Proportional to 711,809.92, 982,297.79 and 389,520.09
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Solution
The fourth proportional to 711,809.92, 982,297.79 and 389,520.09 is: 537,537.78
Step by Step Solution
- Step 1: Write the proportion equation
711,809.92 : 982,297.79 = 389,520.09 : x - Step 2: Convert to fraction form
711,809.92/982,297.79 = 389,520.09/x - Step 3: Cross multiply
711,809.92x = 982,297.79 × 389,520.09 - Step 4: Simplify right side
711,809.92x = 382,624,723,567.60 - Step 5: Solve for x
x = 382,624,723,567.60/711,809.92 - Step 6: Final answer
x = 537,537.78
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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.