Finding the Fourth Proportional to 1,161,888.21, 1,603,373.67 and 645,628.77
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Solution
The fourth proportional to 1,161,888.21, 1,603,373.67 and 645,628.77 is: 890,949.89
Step by Step Solution
- Step 1: Write the proportion equation
1,161,888.21 : 1,603,373.67 = 645,628.77 : x - Step 2: Convert to fraction form
1,161,888.21/1,603,373.67 = 645,628.77/x - Step 3: Cross multiply
1,161,888.21x = 1,603,373.67 × 645,628.77 - Step 4: Simplify right side
1,161,888.21x = 1,035,184,170,412.49 - Step 5: Solve for x
x = 1,035,184,170,412.49/1,161,888.21 - Step 6: Final answer
x = 890,949.89
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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.