Finding the Fourth Proportional to 1,836,915,291.20, 2,755,372,936.80 and 1,320,354,639.20
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Solution
The fourth proportional to 1,836,915,291.20, 2,755,372,936.80 and 1,320,354,639.20 is: 1,980,531,958.80
Step by Step Solution
- Step 1: Write the proportion equation
1,836,915,291.20 : 2,755,372,936.80 = 1,320,354,639.20 : x - Step 2: Convert to fraction form
1,836,915,291.20/2,755,372,936.80 = 1,320,354,639.20/x - Step 3: Cross multiply
1,836,915,291.20x = 2,755,372,936.80 × 1,320,354,639.20 - Step 4: Simplify right side
1,836,915,291.20x = 3,638,069,439,830,008,832 - Step 5: Solve for x
x = 3,638,069,439,830,008,832/1,836,915,291.20 - Step 6: Final answer
x = 1,980,531,958.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.