Finding the Fourth Proportional to 6,386,406.58, 9,581,135.10 and 2,126,611.72
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Solution
The fourth proportional to 6,386,406.58, 9,581,135.10 and 2,126,611.72 is: 3,190,425.47
Step by Step Solution
- Step 1: Write the proportion equation
6,386,406.58 : 9,581,135.10 = 2,126,611.72 : x - Step 2: Convert to fraction form
6,386,406.58/9,581,135.10 = 2,126,611.72/x - Step 3: Cross multiply
6,386,406.58x = 9,581,135.10 × 2,126,611.72 - Step 4: Simplify right side
6,386,406.58x = 20,375,354,194,563.38 - Step 5: Solve for x
x = 20,375,354,194,563.38/6,386,406.58 - Step 6: Final answer
x = 3,190,425.47
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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.