Finding the Fourth Proportional to 1,228,197.26, 1,695,615.53 and 820,988.79
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Solution
The fourth proportional to 1,228,197.26, 1,695,615.53 and 820,988.79 is: 1,133,434.66
Step by Step Solution
- Step 1: Write the proportion equation
1,228,197.26 : 1,695,615.53 = 820,988.79 : x - Step 2: Convert to fraction form
1,228,197.26/1,695,615.53 = 820,988.79/x - Step 3: Cross multiply
1,228,197.26x = 1,695,615.53 × 820,988.79 - Step 4: Simplify right side
1,228,197.26x = 1,392,081,338,174.96 - Step 5: Solve for x
x = 1,392,081,338,174.96/1,228,197.26 - Step 6: Final answer
x = 1,133,434.66
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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.