Finding the Fourth Proportional to 840,415.50, 1,260,634.19 and 279,450
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Solution
The fourth proportional to 840,415.50, 1,260,634.19 and 279,450 is: 419,178.64
Step by Step Solution
- Step 1: Write the proportion equation
840,415.50 : 1,260,634.19 = 279,450 : x - Step 2: Convert to fraction form
840,415.50/1,260,634.19 = 279,450/x - Step 3: Cross multiply
840,415.50x = 1,260,634.19 × 279,450 - Step 4: Simplify right side
840,415.50x = 352,284,222,998.25 - Step 5: Solve for x
x = 352,284,222,998.25/840,415.50 - Step 6: Final answer
x = 419,178.64
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.