Finding the Fourth Proportional to 1,191,643.75, 1,644,828.73 and 809,891.97
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Solution
The fourth proportional to 1,191,643.75, 1,644,828.73 and 809,891.97 is: 1,117,895.82
Step by Step Solution
- Step 1: Write the proportion equation
1,191,643.75 : 1,644,828.73 = 809,891.97 : x - Step 2: Convert to fraction form
1,191,643.75/1,644,828.73 = 809,891.97/x - Step 3: Cross multiply
1,191,643.75x = 1,644,828.73 × 809,891.97 - Step 4: Simplify right side
1,191,643.75x = 1,332,133,572,259.46 - Step 5: Solve for x
x = 1,332,133,572,259.46/1,191,643.75 - Step 6: Final answer
x = 1,117,895.82
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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.