Finding the Fourth Proportional to 686,121.63, 946,847.91 and 417,849.63
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Solution
The fourth proportional to 686,121.63, 946,847.91 and 417,849.63 is: 576,632.53
Step by Step Solution
- Step 1: Write the proportion equation
686,121.63 : 946,847.91 = 417,849.63 : x - Step 2: Convert to fraction form
686,121.63/946,847.91 = 417,849.63/x - Step 3: Cross multiply
686,121.63x = 946,847.91 × 417,849.63 - Step 4: Simplify right side
686,121.63x = 395,640,048,859.77 - Step 5: Solve for x
x = 395,640,048,859.77/686,121.63 - Step 6: Final answer
x = 576,632.53
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1.5x scale
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.