Finding the Fourth Proportional to 403,478,245.80, 605,217,368.70 and 265,728,738.60
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Solution
The fourth proportional to 403,478,245.80, 605,217,368.70 and 265,728,738.60 is: 398,593,107.90
Step by Step Solution
- Step 1: Write the proportion equation
403,478,245.80 : 605,217,368.70 = 265,728,738.60 : x - Step 2: Convert to fraction form
403,478,245.80/605,217,368.70 = 265,728,738.60/x - Step 3: Cross multiply
403,478,245.80x = 605,217,368.70 × 265,728,738.60 - Step 4: Simplify right side
403,478,245.80x = 160,823,647,963,462,144 - Step 5: Solve for x
x = 160,823,647,963,462,144/403,478,245.80 - Step 6: Final answer
x = 398,593,107.90
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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.