Finding the Fourth Proportional to 7,240,220.70, 10,860,331.05 and 2,191,531.20
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Solution
The fourth proportional to 7,240,220.70, 10,860,331.05 and 2,191,531.20 is: 3,287,296.80
Step by Step Solution
- Step 1: Write the proportion equation
7,240,220.70 : 10,860,331.05 = 2,191,531.20 : x - Step 2: Convert to fraction form
7,240,220.70/10,860,331.05 = 2,191,531.20/x - Step 3: Cross multiply
7,240,220.70x = 10,860,331.05 × 2,191,531.20 - Step 4: Simplify right side
7,240,220.70x = 23,800,754,338,403.76 - Step 5: Solve for x
x = 23,800,754,338,403.76/7,240,220.70 - Step 6: Final answer
x = 3,287,296.80
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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.