Finding the Fourth Proportional to 810,471.91, 1,215,707.87 and 305,146.26
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Solution
The fourth proportional to 810,471.91, 1,215,707.87 and 305,146.26 is: 457,719.39
Step by Step Solution
- Step 1: Write the proportion equation
810,471.91 : 1,215,707.87 = 305,146.26 : x - Step 2: Convert to fraction form
810,471.91/1,215,707.87 = 305,146.26/x - Step 3: Cross multiply
810,471.91x = 1,215,707.87 × 305,146.26 - Step 4: Simplify right side
810,471.91x = 370,968,709,783.07 - Step 5: Solve for x
x = 370,968,709,783.07/810,471.91 - Step 6: Final answer
x = 457,719.39
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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.