Finding the Fourth Proportional to 686,103.75, 946,823.18 and 417,831.75
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Solution
The fourth proportional to 686,103.75, 946,823.18 and 417,831.75 is: 576,607.82
Step by Step Solution
- Step 1: Write the proportion equation
686,103.75 : 946,823.18 = 417,831.75 : x - Step 2: Convert to fraction form
686,103.75/946,823.18 = 417,831.75/x - Step 3: Cross multiply
686,103.75x = 946,823.18 × 417,831.75 - Step 4: Simplify right side
686,103.75x = 395,612,786,239.97 - Step 5: Solve for x
x = 395,612,786,239.97/686,103.75 - Step 6: Final answer
x = 576,607.82
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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.