Finding the Fourth Proportional to 3,128,137.31, 4,318,095.62 and 2,647,201.43
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Solution
The fourth proportional to 3,128,137.31, 4,318,095.62 and 2,647,201.43 is: 3,654,209.44
Step by Step Solution
- Step 1: Write the proportion equation
3,128,137.31 : 4,318,095.62 = 2,647,201.43 : x - Step 2: Convert to fraction form
3,128,137.31/4,318,095.62 = 2,647,201.43/x - Step 3: Cross multiply
3,128,137.31x = 4,318,095.62 × 2,647,201.43 - Step 4: Simplify right side
3,128,137.31x = 11,430,868,886,904.73 - Step 5: Solve for x
x = 11,430,868,886,904.73/3,128,137.31 - Step 6: Final answer
x = 3,654,209.44
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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.