Finding the Fourth Proportional to 664,991,996.40, 997,487,994.60 and 276,685,772.40
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Solution
The fourth proportional to 664,991,996.40, 997,487,994.60 and 276,685,772.40 is: 415,028,658.60
Step by Step Solution
- Step 1: Write the proportion equation
664,991,996.40 : 997,487,994.60 = 276,685,772.40 : x - Step 2: Convert to fraction form
664,991,996.40/997,487,994.60 = 276,685,772.40/x - Step 3: Cross multiply
664,991,996.40x = 997,487,994.60 × 276,685,772.40 - Step 4: Simplify right side
664,991,996.40x = 275,990,736,245,628,000 - Step 5: Solve for x
x = 275,990,736,245,628,000/664,991,996.40 - Step 6: Final answer
x = 415,028,658.60
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Similar ratio
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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.