Finding the Fourth Proportional to 686,212.68, 946,973.61 and 384,406.68
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Solution
The fourth proportional to 686,212.68, 946,973.61 and 384,406.68 is: 530,481.28
Step by Step Solution
- Step 1: Write the proportion equation
686,212.68 : 946,973.61 = 384,406.68 : x - Step 2: Convert to fraction form
686,212.68/946,973.61 = 384,406.68/x - Step 3: Cross multiply
686,212.68x = 946,973.61 × 384,406.68 - Step 4: Simplify right side
686,212.68x = 364,022,981,467.72 - Step 5: Solve for x
x = 364,022,981,467.72/686,212.68 - Step 6: Final answer
x = 530,481.28
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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.