Finding the Fourth Proportional to 394,192,937.46, 543,989,776.70 and 217,992,786.96
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Solution
The fourth proportional to 394,192,937.46, 543,989,776.70 and 217,992,786.96 is: 300,831,994.26
Step by Step Solution
- Step 1: Write the proportion equation
394,192,937.46 : 543,989,776.70 = 217,992,786.96 : x - Step 2: Convert to fraction form
394,192,937.46/543,989,776.70 = 217,992,786.96/x - Step 3: Cross multiply
394,192,937.46x = 543,989,776.70 × 217,992,786.96 - Step 4: Simplify right side
394,192,937.46x = 118,585,847,500,581,088 - Step 5: Solve for x
x = 118,585,847,500,581,088/394,192,937.46 - Step 6: Final answer
x = 300,831,994.26
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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.