Finding the Fourth Proportional to 12,127,825.40, 18,192,029.70 and 3,608,439.80
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Solution
The fourth proportional to 12,127,825.40, 18,192,029.70 and 3,608,439.80 is: 5,412,746.46
Step by Step Solution
- Step 1: Write the proportion equation
12,127,825.40 : 18,192,029.70 = 3,608,439.80 : x - Step 2: Convert to fraction form
12,127,825.40/18,192,029.70 = 3,608,439.80/x - Step 3: Cross multiply
12,127,825.40x = 18,192,029.70 × 3,608,439.80 - Step 4: Simplify right side
12,127,825.40x = 65,644,844,012,262.05 - Step 5: Solve for x
x = 65,644,844,012,262.05/12,127,825.40 - Step 6: Final answer
x = 5,412,746.46
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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.