Finding the Fourth Proportional to 1,382,738.99, 1,906,724.81 and 1,091,867.99
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Solution
The fourth proportional to 1,382,738.99, 1,906,724.81 and 1,091,867.99 is: 1,505,628.90
Step by Step Solution
- Step 1: Write the proportion equation
1,382,738.99 : 1,906,724.81 = 1,091,867.99 : x - Step 2: Convert to fraction form
1,382,738.99/1,906,724.81 = 1,091,867.99/x - Step 3: Cross multiply
1,382,738.99x = 1,906,724.81 × 1,091,867.99 - Step 4: Simplify right side
1,382,738.99x = 2,081,891,778,973.88 - Step 5: Solve for x
x = 2,081,891,778,973.88/1,382,738.99 - Step 6: Final answer
x = 1,505,628.90
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1.5x scale
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.