Finding the Fourth Proportional to 1,603,555.11, 2,212,906.50 and 878,428.80
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Solution
The fourth proportional to 1,603,555.11, 2,212,906.50 and 878,428.80 is: 1,212,231.99
Step by Step Solution
- Step 1: Write the proportion equation
1,603,555.11 : 2,212,906.50 = 878,428.80 : x - Step 2: Convert to fraction form
1,603,555.11/2,212,906.50 = 878,428.80/x - Step 3: Cross multiply
1,603,555.11x = 2,212,906.50 × 878,428.80 - Step 4: Simplify right side
1,603,555.11x = 1,943,880,801,307.20 - Step 5: Solve for x
x = 1,943,880,801,307.20/1,603,555.11 - Step 6: Final answer
x = 1,212,231.99
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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.