Finding the Fourth Proportional to 4,212,138.60, 6,318,207.90 and 4,170,148.20
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Solution
The fourth proportional to 4,212,138.60, 6,318,207.90 and 4,170,148.20 is: 6,255,222.30
Step by Step Solution
- Step 1: Write the proportion equation
4,212,138.60 : 6,318,207.90 = 4,170,148.20 : x - Step 2: Convert to fraction form
4,212,138.60/6,318,207.90 = 4,170,148.20/x - Step 3: Cross multiply
4,212,138.60x = 6,318,207.90 × 4,170,148.20 - Step 4: Simplify right side
4,212,138.60x = 26,347,863,301,410.78 - Step 5: Solve for x
x = 26,347,863,301,410.78/4,212,138.60 - Step 6: Final answer
x = 6,255,222.30
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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.