Finding the Fourth Proportional to 7,643,815.92, 11,465,723.70 and 2,786,486.58
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Solution
The fourth proportional to 7,643,815.92, 11,465,723.70 and 2,786,486.58 is: 4,179,729.80
Step by Step Solution
- Step 1: Write the proportion equation
7,643,815.92 : 11,465,723.70 = 2,786,486.58 : x - Step 2: Convert to fraction form
7,643,815.92/11,465,723.70 = 2,786,486.58/x - Step 3: Cross multiply
7,643,815.92x = 11,465,723.70 × 2,786,486.58 - Step 4: Simplify right side
7,643,815.92x = 31,949,085,220,037.95 - Step 5: Solve for x
x = 31,949,085,220,037.95/7,643,815.92 - Step 6: Final answer
x = 4,179,729.80
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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.