Finding the Fourth Proportional to 686,107.75, 946,828.70 and 417,835.75
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Solution
The fourth proportional to 686,107.75, 946,828.70 and 417,835.75 is: 576,613.34
Step by Step Solution
- Step 1: Write the proportion equation
686,107.75 : 946,828.70 = 417,835.75 : x - Step 2: Convert to fraction form
686,107.75/946,828.70 = 417,835.75/x - Step 3: Cross multiply
686,107.75x = 946,828.70 × 417,835.75 - Step 4: Simplify right side
686,107.75x = 395,618,879,986.03 - Step 5: Solve for x
x = 395,618,879,986.03/686,107.75 - Step 6: Final answer
x = 576,613.34
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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.