Finding the Fourth Proportional to 716,443.74, 988,692.36 and 394,146.92
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Solution
The fourth proportional to 716,443.74, 988,692.36 and 394,146.92 is: 543,922.75
Step by Step Solution
- Step 1: Write the proportion equation
716,443.74 : 988,692.36 = 394,146.92 : x - Step 2: Convert to fraction form
716,443.74/988,692.36 = 394,146.92/x - Step 3: Cross multiply
716,443.74x = 988,692.36 × 394,146.92 - Step 4: Simplify right side
716,443.74x = 389,690,046,550.80 - Step 5: Solve for x
x = 389,690,046,550.80/716,443.74 - Step 6: Final answer
x = 543,922.75
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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.