Finding the Fourth Proportional to 5,113,463.78, 7,056,729.74 and 2,790,505.98
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Solution
The fourth proportional to 5,113,463.78, 7,056,729.74 and 2,790,505.98 is: 3,850,979.96
Step by Step Solution
- Step 1: Write the proportion equation
5,113,463.78 : 7,056,729.74 = 2,790,505.98 : x - Step 2: Convert to fraction form
5,113,463.78/7,056,729.74 = 2,790,505.98/x - Step 3: Cross multiply
5,113,463.78x = 7,056,729.74 × 2,790,505.98 - Step 4: Simplify right side
5,113,463.78x = 19,691,846,503,430.20 - Step 5: Solve for x
x = 19,691,846,503,430.20/5,113,463.78 - Step 6: Final answer
x = 3,850,979.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.