Finding the Fourth Proportional to 1,112,157.95, 1,668,221.35 and 438,245.12
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Solution
The fourth proportional to 1,112,157.95, 1,668,221.35 and 438,245.12 is: 657,361.54
Step by Step Solution
- Step 1: Write the proportion equation
1,112,157.95 : 1,668,221.35 = 438,245.12 : x - Step 2: Convert to fraction form
1,112,157.95/1,668,221.35 = 438,245.12/x - Step 3: Cross multiply
1,112,157.95x = 1,668,221.35 × 438,245.12 - Step 4: Simplify right side
1,112,157.95x = 731,089,860,641.07 - Step 5: Solve for x
x = 731,089,860,641.07/1,112,157.95 - Step 6: Final answer
x = 657,361.54
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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.