Finding the Fourth Proportional to 1,161,988.49, 1,603,441.82 and 645,709.55
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Solution
The fourth proportional to 1,161,988.49, 1,603,441.82 and 645,709.55 is: 891,022.33
Step by Step Solution
- Step 1: Write the proportion equation
1,161,988.49 : 1,603,441.82 = 645,709.55 : x - Step 2: Convert to fraction form
1,161,988.49/1,603,441.82 = 645,709.55/x - Step 3: Cross multiply
1,161,988.49x = 1,603,441.82 × 645,709.55 - Step 4: Simplify right side
1,161,988.49x = 1,035,357,684,797.62 - Step 5: Solve for x
x = 1,035,357,684,797.62/1,161,988.49 - Step 6: Final answer
x = 891,022.33
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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.