Finding the Fourth Proportional to 2,178,711.87, 3,006,550.23 and 1,211,814.87
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Solution
The fourth proportional to 2,178,711.87, 3,006,550.23 and 1,211,814.87 is: 1,672,264.39
Step by Step Solution
- Step 1: Write the proportion equation
2,178,711.87 : 3,006,550.23 = 1,211,814.87 : x - Step 2: Convert to fraction form
2,178,711.87/3,006,550.23 = 1,211,814.87/x - Step 3: Cross multiply
2,178,711.87x = 3,006,550.23 × 1,211,814.87 - Step 4: Simplify right side
2,178,711.87x = 3,643,382,276,115.92 - Step 5: Solve for x
x = 3,643,382,276,115.92/2,178,711.87 - Step 6: Final answer
x = 1,672,264.39
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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.