Finding the Fourth Proportional to 852,245.40, 1,278,368.10 and 319,783.80
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Solution
The fourth proportional to 852,245.40, 1,278,368.10 and 319,783.80 is: 479,675.70
Step by Step Solution
- Step 1: Write the proportion equation
852,245.40 : 1,278,368.10 = 319,783.80 : x - Step 2: Convert to fraction form
852,245.40/1,278,368.10 = 319,783.80/x - Step 3: Cross multiply
852,245.40x = 1,278,368.10 × 319,783.80 - Step 4: Simplify right side
852,245.40x = 408,801,408,816.78 - Step 5: Solve for x
x = 408,801,408,816.78/852,245.40 - Step 6: Final answer
x = 479,675.70
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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.