Finding the Fourth Proportional to 1,805,790.80, 2,491,990.68 and 989,976.98
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Solution
The fourth proportional to 1,805,790.80, 2,491,990.68 and 989,976.98 is: 1,366,167.89
Step by Step Solution
- Step 1: Write the proportion equation
1,805,790.80 : 2,491,990.68 = 989,976.98 : x - Step 2: Convert to fraction form
1,805,790.80/2,491,990.68 = 989,976.98/x - Step 3: Cross multiply
1,805,790.80x = 2,491,990.68 × 989,976.98 - Step 4: Simplify right side
1,805,790.80x = 2,467,013,395,114.59 - Step 5: Solve for x
x = 2,467,013,395,114.59/1,805,790.80 - Step 6: Final answer
x = 1,366,167.89
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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.