Finding the Fourth Proportional to 4,920,131.70, 7,380,197.55 and 3,660,419.70
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Solution
The fourth proportional to 4,920,131.70, 7,380,197.55 and 3,660,419.70 is: 5,490,629.55
Step by Step Solution
- Step 1: Write the proportion equation
4,920,131.70 : 7,380,197.55 = 3,660,419.70 : x - Step 2: Convert to fraction form
4,920,131.70/7,380,197.55 = 3,660,419.70/x - Step 3: Cross multiply
4,920,131.70x = 7,380,197.55 × 3,660,419.70 - Step 4: Simplify right side
4,920,131.70x = 27,014,620,501,911.73 - Step 5: Solve for x
x = 27,014,620,501,911.73/4,920,131.70 - Step 6: Final answer
x = 5,490,629.55
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Double scale
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Similar ratio
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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.