Finding the Fourth Proportional to 743,548.11, 1,026,099.77 and 421,320.99
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Solution
The fourth proportional to 743,548.11, 1,026,099.77 and 421,320.99 is: 581,424.89
Step by Step Solution
- Step 1: Write the proportion equation
743,548.11 : 1,026,099.77 = 421,320.99 : x - Step 2: Convert to fraction form
743,548.11/1,026,099.77 = 421,320.99/x - Step 3: Cross multiply
743,548.11x = 1,026,099.77 × 421,320.99 - Step 4: Simplify right side
743,548.11x = 432,317,372,676.44 - Step 5: Solve for x
x = 432,317,372,676.44/743,548.11 - Step 6: Final answer
x = 581,424.89
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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.