Finding the Fourth Proportional to 757,172,415.60, 1,135,310,725.80 and 394,375,359.60
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Solution
The fourth proportional to 757,172,415.60, 1,135,310,725.80 and 394,375,359.60 is: 591,329,750.69
Step by Step Solution
- Step 1: Write the proportion equation
757,172,415.60 : 1,135,310,725.80 = 394,375,359.60 : x - Step 2: Convert to fraction form
757,172,415.60/1,135,310,725.80 = 394,375,359.60/x - Step 3: Cross multiply
757,172,415.60x = 1,135,310,725.80 × 394,375,359.60 - Step 4: Simplify right side
757,172,415.60x = 447,738,575,745,112,000 - Step 5: Solve for x
x = 447,738,575,745,112,000/757,172,415.60 - Step 6: Final answer
x = 591,329,750.69
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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.