Finding the Fourth Proportional to 405,546,396.41, 608,076,662.77 and 129,078,190.97
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Solution
The fourth proportional to 405,546,396.41, 608,076,662.77 and 129,078,190.97 is: 193,539,965.58
Step by Step Solution
- Step 1: Write the proportion equation
405,546,396.41 : 608,076,662.77 = 129,078,190.97 : x - Step 2: Convert to fraction form
405,546,396.41/608,076,662.77 = 129,078,190.97/x - Step 3: Cross multiply
405,546,396.41x = 608,076,662.77 × 129,078,190.97 - Step 4: Simplify right side
405,546,396.41x = 78,489,435,601,426,352 - Step 5: Solve for x
x = 78,489,435,601,426,352/405,546,396.41 - Step 6: Final answer
x = 193,539,965.58
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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.