Finding the Fourth Proportional to 686,211.75, 1,029,532.74 and 412,956.12
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Solution
The fourth proportional to 686,211.75, 1,029,532.74 and 412,956.12 is: 619,563.63
Step by Step Solution
- Step 1: Write the proportion equation
686,211.75 : 1,029,532.74 = 412,956.12 : x - Step 2: Convert to fraction form
686,211.75/1,029,532.74 = 412,956.12/x - Step 3: Cross multiply
686,211.75x = 1,029,532.74 × 412,956.12 - Step 4: Simplify right side
686,211.75x = 425,151,845,361.58 - Step 5: Solve for x
x = 425,151,845,361.58/686,211.75 - Step 6: Final answer
x = 619,563.63
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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.