Finding the Fourth Proportional to 7,721,576.54, 10,655,771.50 and 4,236,938.20
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Solution
The fourth proportional to 7,721,576.54, 10,655,771.50 and 4,236,938.20 is: 5,846,972.45
Step by Step Solution
- Step 1: Write the proportion equation
7,721,576.54 : 10,655,771.50 = 4,236,938.20 : x - Step 2: Convert to fraction form
7,721,576.54/10,655,771.50 = 4,236,938.20/x - Step 3: Cross multiply
7,721,576.54x = 10,655,771.50 × 4,236,938.20 - Step 4: Simplify right side
7,721,576.54x = 45,147,845,318,821.30 - Step 5: Solve for x
x = 45,147,845,318,821.30/7,721,576.54 - Step 6: Final answer
x = 5,846,972.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.