Finding the Fourth Proportional to 1,638,753,218.40, 2,458,129,827.60 and 1,611,543,439.20
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Solution
The fourth proportional to 1,638,753,218.40, 2,458,129,827.60 and 1,611,543,439.20 is: 2,417,315,158.80
Step by Step Solution
- Step 1: Write the proportion equation
1,638,753,218.40 : 2,458,129,827.60 = 1,611,543,439.20 : x - Step 2: Convert to fraction form
1,638,753,218.40/2,458,129,827.60 = 1,611,543,439.20/x - Step 3: Cross multiply
1,638,753,218.40x = 2,458,129,827.60 × 1,611,543,439.20 - Step 4: Simplify right side
1,638,753,218.40x = 3,961,382,996,370,607,104 - Step 5: Solve for x
x = 3,961,382,996,370,607,104/1,638,753,218.40 - Step 6: Final answer
x = 2,417,315,158.80
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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.