Finding the Fourth Proportional to 816,108.80, 1,224,163.20 and 438,195.20
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Solution
The fourth proportional to 816,108.80, 1,224,163.20 and 438,195.20 is: 657,292.80
Step by Step Solution
- Step 1: Write the proportion equation
816,108.80 : 1,224,163.20 = 438,195.20 : x - Step 2: Convert to fraction form
816,108.80/1,224,163.20 = 438,195.20/x - Step 3: Cross multiply
816,108.80x = 1,224,163.20 × 438,195.20 - Step 4: Simplify right side
816,108.80x = 536,422,438,256.64 - Step 5: Solve for x
x = 536,422,438,256.64/816,108.80 - Step 6: Final answer
x = 657,292.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.