Finding the Fourth Proportional to 1,603,609.30, 2,211,207.42 and 1,021,910.95
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Solution
The fourth proportional to 1,603,609.30, 2,211,207.42 and 1,021,910.95 is: 1,409,106.99
Step by Step Solution
- Step 1: Write the proportion equation
1,603,609.30 : 2,211,207.42 = 1,021,910.95 : x - Step 2: Convert to fraction form
1,603,609.30/2,211,207.42 = 1,021,910.95/x - Step 3: Cross multiply
1,603,609.30x = 2,211,207.42 × 1,021,910.95 - Step 4: Simplify right side
1,603,609.30x = 2,259,657,075,219.25 - Step 5: Solve for x
x = 2,259,657,075,219.25/1,603,609.30 - Step 6: Final answer
x = 1,409,106.99
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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.