Finding the Fourth Proportional to 7,122,001.20, 10,682,742.60 and 2,861,012.40
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Solution
The fourth proportional to 7,122,001.20, 10,682,742.60 and 2,861,012.40 is: 4,291,414.48
Step by Step Solution
- Step 1: Write the proportion equation
7,122,001.20 : 10,682,742.60 = 2,861,012.40 : x - Step 2: Convert to fraction form
7,122,001.20/10,682,742.60 = 2,861,012.40/x - Step 3: Cross multiply
7,122,001.20x = 10,682,742.60 × 2,861,012.40 - Step 4: Simplify right side
7,122,001.20x = 30,563,459,044,608.24 - Step 5: Solve for x
x = 30,563,459,044,608.24/7,122,001.20 - Step 6: Final answer
x = 4,291,414.48
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1.5x scale
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.