Finding the Fourth Proportional to 686,021.41, 946,691.14 and 395,626.08
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Solution
The fourth proportional to 686,021.41, 946,691.14 and 395,626.08 is: 545,953.38
Step by Step Solution
- Step 1: Write the proportion equation
686,021.41 : 946,691.14 = 395,626.08 : x - Step 2: Convert to fraction form
686,021.41/946,691.14 = 395,626.08/x - Step 3: Cross multiply
686,021.41x = 946,691.14 × 395,626.08 - Step 4: Simplify right side
686,021.41x = 374,535,704,688.93 - Step 5: Solve for x
x = 374,535,704,688.93/686,021.41 - Step 6: Final answer
x = 545,953.38
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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.