Finding the Fourth Proportional to 5,305,026.29, 7,320,936.20 and 2,890,578.29
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Solution
The fourth proportional to 5,305,026.29, 7,320,936.20 and 2,890,578.29 is: 3,988,997.99
Step by Step Solution
- Step 1: Write the proportion equation
5,305,026.29 : 7,320,936.20 = 2,890,578.29 : x - Step 2: Convert to fraction form
5,305,026.29/7,320,936.20 = 2,890,578.29/x - Step 3: Cross multiply
5,305,026.29x = 7,320,936.20 × 2,890,578.29 - Step 4: Simplify right side
5,305,026.29x = 21,161,739,191,137.53 - Step 5: Solve for x
x = 21,161,739,191,137.53/5,305,026.29 - Step 6: Final answer
x = 3,988,997.99
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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.