Finding the Fourth Proportional to 13,259,938.40, 19,889,907.60 and 4,284,490.40
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Solution
The fourth proportional to 13,259,938.40, 19,889,907.60 and 4,284,490.40 is: 6,426,735.60
Step by Step Solution
- Step 1: Write the proportion equation
13,259,938.40 : 19,889,907.60 = 4,284,490.40 : x - Step 2: Convert to fraction form
13,259,938.40/19,889,907.60 = 4,284,490.40/x - Step 3: Cross multiply
13,259,938.40x = 19,889,907.60 × 4,284,490.40 - Step 4: Simplify right side
13,259,938.40x = 85,218,118,169,087.05 - Step 5: Solve for x
x = 85,218,118,169,087.05/13,259,938.40 - Step 6: Final answer
x = 6,426,735.60
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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.