Finding the Fourth Proportional to 1,408,512,229.60, 2,112,768,344.40 and 681,574,424.80
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Solution
The fourth proportional to 1,408,512,229.60, 2,112,768,344.40 and 681,574,424.80 is: 1,022,361,637.20
Step by Step Solution
- Step 1: Write the proportion equation
1,408,512,229.60 : 2,112,768,344.40 = 681,574,424.80 : x - Step 2: Convert to fraction form
1,408,512,229.60/2,112,768,344.40 = 681,574,424.80/x - Step 3: Cross multiply
1,408,512,229.60x = 2,112,768,344.40 × 681,574,424.80 - Step 4: Simplify right side
1,408,512,229.60x = 1,440,008,869,070,078,208 - Step 5: Solve for x
x = 1,440,008,869,070,078,208/1,408,512,229.60 - Step 6: Final answer
x = 1,022,361,637.20
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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.