Finding the Fourth Proportional to 380,902,936.12, 525,651,499.12 and 285,364,163.70
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Solution
The fourth proportional to 380,902,936.12, 525,651,499.12 and 285,364,163.70 is: 393,806,626.89
Step by Step Solution
- Step 1: Write the proportion equation
380,902,936.12 : 525,651,499.12 = 285,364,163.70 : x - Step 2: Convert to fraction form
380,902,936.12/525,651,499.12 = 285,364,163.70/x - Step 3: Cross multiply
380,902,936.12x = 525,651,499.12 × 285,364,163.70 - Step 4: Simplify right side
380,902,936.12x = 150,002,100,444,030,080 - Step 5: Solve for x
x = 150,002,100,444,030,080/380,902,936.12 - Step 6: Final answer
x = 393,806,626.89
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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.