Finding the Fourth Proportional to 639,738,129.80, 959,607,194.70 and 295,364,361.80
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Solution
The fourth proportional to 639,738,129.80, 959,607,194.70 and 295,364,361.80 is: 443,046,542.70
Step by Step Solution
- Step 1: Write the proportion equation
639,738,129.80 : 959,607,194.70 = 295,364,361.80 : x - Step 2: Convert to fraction form
639,738,129.80/959,607,194.70 = 295,364,361.80/x - Step 3: Cross multiply
639,738,129.80x = 959,607,194.70 × 295,364,361.80 - Step 4: Simplify right side
639,738,129.80x = 283,433,766,641,253,856 - Step 5: Solve for x
x = 283,433,766,641,253,856/639,738,129.80 - Step 6: Final answer
x = 443,046,542.70
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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.