Finding the Fourth Proportional to 5,321,966.40, 7,982,949.60 and 2,129,383.80
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Solution
The fourth proportional to 5,321,966.40, 7,982,949.60 and 2,129,383.80 is: 3,194,075.70
Step by Step Solution
- Step 1: Write the proportion equation
5,321,966.40 : 7,982,949.60 = 2,129,383.80 : x - Step 2: Convert to fraction form
5,321,966.40/7,982,949.60 = 2,129,383.80/x - Step 3: Cross multiply
5,321,966.40x = 7,982,949.60 × 2,129,383.80 - Step 4: Simplify right side
5,321,966.40x = 16,998,763,554,456.48 - Step 5: Solve for x
x = 16,998,763,554,456.48/5,321,966.40 - Step 6: Final answer
x = 3,194,075.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.