Finding the Fourth Proportional to 946,771.68, 1,420,170.12 and 315,685.80
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Solution
The fourth proportional to 946,771.68, 1,420,170.12 and 315,685.80 is: 473,532.90
Step by Step Solution
- Step 1: Write the proportion equation
946,771.68 : 1,420,170.12 = 315,685.80 : x - Step 2: Convert to fraction form
946,771.68/1,420,170.12 = 315,685.80/x - Step 3: Cross multiply
946,771.68x = 1,420,170.12 × 315,685.80 - Step 4: Simplify right side
946,771.68x = 448,327,540,468.30 - Step 5: Solve for x
x = 448,327,540,468.30/946,771.68 - Step 6: Final answer
x = 473,532.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.