Finding the Fourth Proportional to 1,638,895.68, 2,261,824.56 and 994,479.12
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Solution
The fourth proportional to 1,638,895.68, 2,261,824.56 and 994,479.12 is: 1,372,471.31
Step by Step Solution
- Step 1: Write the proportion equation
1,638,895.68 : 2,261,824.56 = 994,479.12 : x - Step 2: Convert to fraction form
1,638,895.68/2,261,824.56 = 994,479.12/x - Step 3: Cross multiply
1,638,895.68x = 2,261,824.56 × 994,479.12 - Step 4: Simplify right side
1,638,895.68x = 2,249,337,298,023.19 - Step 5: Solve for x
x = 2,249,337,298,023.19/1,638,895.68 - Step 6: Final answer
x = 1,372,471.31
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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.