Finding the Fourth Proportional to 1,189,122.12, 1,640,880 and 705,603.96
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Solution
The fourth proportional to 1,189,122.12, 1,640,880 and 705,603.96 is: 973,669.07
Step by Step Solution
- Step 1: Write the proportion equation
1,189,122.12 : 1,640,880 = 705,603.96 : x - Step 2: Convert to fraction form
1,189,122.12/1,640,880 = 705,603.96/x - Step 3: Cross multiply
1,189,122.12x = 1,640,880 × 705,603.96 - Step 4: Simplify right side
1,189,122.12x = 1,157,811,425,884.80 - Step 5: Solve for x
x = 1,157,811,425,884.80/1,189,122.12 - Step 6: Final answer
x = 973,669.07
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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.