Finding the Fourth Proportional to 2,173,805.82, 2,999,945.70 and 1,206,936.14
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Solution
The fourth proportional to 2,173,805.82, 2,999,945.70 and 1,206,936.14 is: 1,665,623.87
Step by Step Solution
- Step 1: Write the proportion equation
2,173,805.82 : 2,999,945.70 = 1,206,936.14 : x - Step 2: Convert to fraction form
2,173,805.82/2,999,945.70 = 1,206,936.14/x - Step 3: Cross multiply
2,173,805.82x = 2,999,945.70 × 1,206,936.14 - Step 4: Simplify right side
2,173,805.82x = 3,620,742,868,367.87 - Step 5: Solve for x
x = 3,620,742,868,367.87/2,173,805.82 - Step 6: Final answer
x = 1,665,623.87
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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.