Finding the Fourth Proportional to 12,126,958.40, 18,190,729.20 and 3,607,572.80
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Solution
The fourth proportional to 12,126,958.40, 18,190,729.20 and 3,607,572.80 is: 5,411,445.95
Step by Step Solution
- Step 1: Write the proportion equation
12,126,958.40 : 18,190,729.20 = 3,607,572.80 : x - Step 2: Convert to fraction form
12,126,958.40/18,190,729.20 = 3,607,572.80/x - Step 3: Cross multiply
12,126,958.40x = 18,190,729.20 × 3,607,572.80 - Step 4: Simplify right side
12,126,958.40x = 65,624,379,874,085.76 - Step 5: Solve for x
x = 65,624,379,874,085.76/12,126,958.40 - Step 6: Final answer
x = 5,411,445.95
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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.