Finding the Fourth Proportional to 770,812.20, 1,156,218.30 and 209,845.80
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Solution
The fourth proportional to 770,812.20, 1,156,218.30 and 209,845.80 is: 314,768.70
Step by Step Solution
- Step 1: Write the proportion equation
770,812.20 : 1,156,218.30 = 209,845.80 : x - Step 2: Convert to fraction form
770,812.20/1,156,218.30 = 209,845.80/x - Step 3: Cross multiply
770,812.20x = 1,156,218.30 × 209,845.80 - Step 4: Simplify right side
770,812.20x = 242,627,554,138.14 - Step 5: Solve for x
x = 242,627,554,138.14/770,812.20 - Step 6: Final answer
x = 314,768.70
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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.