Finding the Fourth Proportional to 442,880,128.80, 664,320,193.20 and 422,724,736.80
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Solution
The fourth proportional to 442,880,128.80, 664,320,193.20 and 422,724,736.80 is: 634,087,105.20
Step by Step Solution
- Step 1: Write the proportion equation
442,880,128.80 : 664,320,193.20 = 422,724,736.80 : x - Step 2: Convert to fraction form
442,880,128.80/664,320,193.20 = 422,724,736.80/x - Step 3: Cross multiply
442,880,128.80x = 664,320,193.20 × 422,724,736.80 - Step 4: Simplify right side
442,880,128.80x = 280,824,578,821,395,168 - Step 5: Solve for x
x = 280,824,578,821,395,168/442,880,128.80 - Step 6: Final answer
x = 634,087,105.20
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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.