Finding the Fourth Proportional to 3,178,344.26, 4,386,201.09 and 1,728,137.06
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Solution
The fourth proportional to 3,178,344.26, 4,386,201.09 and 1,728,137.06 is: 2,384,875.91
Step by Step Solution
- Step 1: Write the proportion equation
3,178,344.26 : 4,386,201.09 = 1,728,137.06 : x - Step 2: Convert to fraction form
3,178,344.26/4,386,201.09 = 1,728,137.06/x - Step 3: Cross multiply
3,178,344.26x = 4,386,201.09 × 1,728,137.06 - Step 4: Simplify right side
3,178,344.26x = 7,579,956,656,241.40 - Step 5: Solve for x
x = 7,579,956,656,241.40/3,178,344.26 - Step 6: Final answer
x = 2,384,875.91
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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.