Finding the Fourth Proportional to 5,343,455.20, 8,020,431.60 and 2,650,820.80
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Solution
The fourth proportional to 5,343,455.20, 8,020,431.60 and 2,650,820.80 is: 3,978,835.06
Step by Step Solution
- Step 1: Write the proportion equation
5,343,455.20 : 8,020,431.60 = 2,650,820.80 : x - Step 2: Convert to fraction form
5,343,455.20/8,020,431.60 = 2,650,820.80/x - Step 3: Cross multiply
5,343,455.20x = 8,020,431.60 × 2,650,820.80 - Step 4: Simplify right side
5,343,455.20x = 21,260,726,910,257.28 - Step 5: Solve for x
x = 21,260,726,910,257.28/5,343,455.20 - Step 6: Final answer
x = 3,978,835.06
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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.