Finding the Fourth Proportional to 2,638,599.12, 3,641,273.80 and 1,431,375.12
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Solution
The fourth proportional to 2,638,599.12, 3,641,273.80 and 1,431,375.12 is: 1,975,301.47
Step by Step Solution
- Step 1: Write the proportion equation
2,638,599.12 : 3,641,273.80 = 1,431,375.12 : x - Step 2: Convert to fraction form
2,638,599.12/3,641,273.80 = 1,431,375.12/x - Step 3: Cross multiply
2,638,599.12x = 3,641,273.80 × 1,431,375.12 - Step 4: Simplify right side
2,638,599.12x = 5,212,028,722,427.86 - Step 5: Solve for x
x = 5,212,028,722,427.86/2,638,599.12 - Step 6: Final answer
x = 1,975,301.47
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1.5x scale
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.