Finding the Fourth Proportional to 3,993,428.64, 5,515,477.68 and 2,684,407.92
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Solution
The fourth proportional to 3,993,428.64, 5,515,477.68 and 2,684,407.92 is: 3,707,538.88
Step by Step Solution
- Step 1: Write the proportion equation
3,993,428.64 : 5,515,477.68 = 2,684,407.92 : x - Step 2: Convert to fraction form
3,993,428.64/5,515,477.68 = 2,684,407.92/x - Step 3: Cross multiply
3,993,428.64x = 5,515,477.68 × 2,684,407.92 - Step 4: Simplify right side
3,993,428.64x = 14,805,791,966,775.22 - Step 5: Solve for x
x = 14,805,791,966,775.22/3,993,428.64 - Step 6: Final answer
x = 3,707,538.88
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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.