Finding the Fourth Proportional to 1,638,752,391.40, 2,458,128,587.10 and 1,611,542,612.20
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Solution
The fourth proportional to 1,638,752,391.40, 2,458,128,587.10 and 1,611,542,612.20 is: 2,417,313,918.30
Step by Step Solution
- Step 1: Write the proportion equation
1,638,752,391.40 : 2,458,128,587.10 = 1,611,542,612.20 : x - Step 2: Convert to fraction form
1,638,752,391.40/2,458,128,587.10 = 1,611,542,612.20/x - Step 3: Cross multiply
1,638,752,391.40x = 2,458,128,587.10 × 1,611,542,612.20 - Step 4: Simplify right side
1,638,752,391.40x = 3,961,378,964,378,629,120 - Step 5: Solve for x
x = 3,961,378,964,378,629,120/1,638,752,391.40 - Step 6: Final answer
x = 2,417,313,918.30
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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.