Finding the Fourth Proportional to 18,259,318.60, 27,388,977.90 and 4,612,438.60
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Solution
The fourth proportional to 18,259,318.60, 27,388,977.90 and 4,612,438.60 is: 6,918,657.90
Step by Step Solution
- Step 1: Write the proportion equation
18,259,318.60 : 27,388,977.90 = 4,612,438.60 : x - Step 2: Convert to fraction form
18,259,318.60/27,388,977.90 = 4,612,438.60/x - Step 3: Cross multiply
18,259,318.60x = 27,388,977.90 × 4,612,438.60 - Step 4: Simplify right side
18,259,318.60x = 126,329,978,880,506.92 - Step 5: Solve for x
x = 126,329,978,880,506.92/18,259,318.60 - Step 6: Final answer
x = 6,918,657.90
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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.