Finding the Fourth Proportional to 1,638,622.65, 2,261,433.87 and 903,720.66
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Solution
The fourth proportional to 1,638,622.65, 2,261,433.87 and 903,720.66 is: 1,247,208.75
Step by Step Solution
- Step 1: Write the proportion equation
1,638,622.65 : 2,261,433.87 = 903,720.66 : x - Step 2: Convert to fraction form
1,638,622.65/2,261,433.87 = 903,720.66/x - Step 3: Cross multiply
1,638,622.65x = 2,261,433.87 × 903,720.66 - Step 4: Simplify right side
1,638,622.65x = 2,043,704,509,542.75 - Step 5: Solve for x
x = 2,043,704,509,542.75/1,638,622.65 - Step 6: Final answer
x = 1,247,208.75
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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.