Finding the Fourth Proportional to 716,517.40, 988,809.34 and 394,228.44
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Solution
The fourth proportional to 716,517.40, 988,809.34 and 394,228.44 is: 544,043.68
Step by Step Solution
- Step 1: Write the proportion equation
716,517.40 : 988,809.34 = 394,228.44 : x - Step 2: Convert to fraction form
716,517.40/988,809.34 = 394,228.44/x - Step 3: Cross multiply
716,517.40x = 988,809.34 × 394,228.44 - Step 4: Simplify right side
716,517.40x = 389,816,763,565.63 - Step 5: Solve for x
x = 389,816,763,565.63/716,517.40 - Step 6: Final answer
x = 544,043.68
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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.