Finding the Fourth Proportional to 1,989,440,534.40, 2,984,160,801.60 and 1,408,965,244.80
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Solution
The fourth proportional to 1,989,440,534.40, 2,984,160,801.60 and 1,408,965,244.80 is: 2,113,447,867.20
Step by Step Solution
- Step 1: Write the proportion equation
1,989,440,534.40 : 2,984,160,801.60 = 1,408,965,244.80 : x - Step 2: Convert to fraction form
1,989,440,534.40/2,984,160,801.60 = 1,408,965,244.80/x - Step 3: Cross multiply
1,989,440,534.40x = 2,984,160,801.60 × 1,408,965,244.80 - Step 4: Simplify right side
1,989,440,534.40x = 4,204,578,854,348,908,032 - Step 5: Solve for x
x = 4,204,578,854,348,908,032/1,989,440,534.40 - Step 6: Final answer
x = 2,113,447,867.20
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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.