Finding the Fourth Proportional to 1,153,172,287.68, 1,591,369,869.60 and 624,524,115.84
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Solution
The fourth proportional to 1,153,172,287.68, 1,591,369,869.60 and 624,524,115.84 is: 861,839,008.28
Step by Step Solution
- Step 1: Write the proportion equation
1,153,172,287.68 : 1,591,369,869.60 = 624,524,115.84 : x - Step 2: Convert to fraction form
1,153,172,287.68/1,591,369,869.60 = 624,524,115.84/x - Step 3: Cross multiply
1,153,172,287.68x = 1,591,369,869.60 × 624,524,115.84 - Step 4: Simplify right side
1,153,172,287.68x = 993,848,860,786,356,096 - Step 5: Solve for x
x = 993,848,860,786,356,096/1,153,172,287.68 - Step 6: Final answer
x = 861,839,008.28
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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.