Finding the Fourth Proportional to 3,603,579.28, 4,972,939.74 and 1,971,986.56
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Solution
The fourth proportional to 3,603,579.28, 4,972,939.74 and 1,971,986.56 is: 2,721,341.63
Step by Step Solution
- Step 1: Write the proportion equation
3,603,579.28 : 4,972,939.74 = 1,971,986.56 : x - Step 2: Convert to fraction form
3,603,579.28/4,972,939.74 = 1,971,986.56/x - Step 3: Cross multiply
3,603,579.28x = 4,972,939.74 × 1,971,986.56 - Step 4: Simplify right side
3,603,579.28x = 9,806,570,318,537.55 - Step 5: Solve for x
x = 9,806,570,318,537.55/3,603,579.28 - Step 6: Final answer
x = 2,721,341.63
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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.