Finding the Fourth Proportional to 7,727,720.40, 11,593,654.20 and 6,892,059.60
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Solution
The fourth proportional to 7,727,720.40, 11,593,654.20 and 6,892,059.60 is: 10,339,938.76
Step by Step Solution
- Step 1: Write the proportion equation
7,727,720.40 : 11,593,654.20 = 6,892,059.60 : x - Step 2: Convert to fraction form
7,727,720.40/11,593,654.20 = 6,892,059.60/x - Step 3: Cross multiply
7,727,720.40x = 11,593,654.20 × 6,892,059.60 - Step 4: Simplify right side
7,727,720.40x = 79,904,155,728,190.31 - Step 5: Solve for x
x = 79,904,155,728,190.31/7,727,720.40 - Step 6: Final answer
x = 10,339,938.76
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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.