Finding the Fourth Proportional to 2,165,861.40, 2,987,950.52 and 1,305,943.94
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Solution
The fourth proportional to 2,165,861.40, 2,987,950.52 and 1,305,943.94 is: 1,801,636.92
Step by Step Solution
- Step 1: Write the proportion equation
2,165,861.40 : 2,987,950.52 = 1,305,943.94 : x - Step 2: Convert to fraction form
2,165,861.40/2,987,950.52 = 1,305,943.94/x - Step 3: Cross multiply
2,165,861.40x = 2,987,950.52 × 1,305,943.94 - Step 4: Simplify right side
2,165,861.40x = 3,902,095,867,762.62 - Step 5: Solve for x
x = 3,902,095,867,762.62/2,165,861.40 - Step 6: Final answer
x = 1,801,636.92
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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.