Finding the Fourth Proportional to 5,172,486.71, 7,138,253.12 and 2,880,647.39
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Solution
The fourth proportional to 5,172,486.71, 7,138,253.12 and 2,880,647.39 is: 3,975,416.74
Step by Step Solution
- Step 1: Write the proportion equation
5,172,486.71 : 7,138,253.12 = 2,880,647.39 : x - Step 2: Convert to fraction form
5,172,486.71/7,138,253.12 = 2,880,647.39/x - Step 3: Cross multiply
5,172,486.71x = 7,138,253.12 × 2,880,647.39 - Step 4: Simplify right side
5,172,486.71x = 20,562,790,222,729.75 - Step 5: Solve for x
x = 20,562,790,222,729.75/5,172,486.71 - Step 6: Final answer
x = 3,975,416.74
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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.