Finding the Fourth Proportional to 5,147,893.19, 7,721,885.57 and 1,309,720.49
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Solution
The fourth proportional to 5,147,893.19, 7,721,885.57 and 1,309,720.49 is: 1,964,592.38
Step by Step Solution
- Step 1: Write the proportion equation
5,147,893.19 : 7,721,885.57 = 1,309,720.49 : x - Step 2: Convert to fraction form
5,147,893.19/7,721,885.57 = 1,309,720.49/x - Step 3: Cross multiply
5,147,893.19x = 7,721,885.57 × 1,309,720.49 - Step 4: Simplify right side
5,147,893.19x = 10,113,511,743,630.55 - Step 5: Solve for x
x = 10,113,511,743,630.55/5,147,893.19 - Step 6: Final answer
x = 1,964,592.38
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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.