Finding the Fourth Proportional to 1,349,859.69, 1,863,275.49 and 777,128.13
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Solution
The fourth proportional to 1,349,859.69, 1,863,275.49 and 777,128.13 is: 1,072,706.90
Step by Step Solution
- Step 1: Write the proportion equation
1,349,859.69 : 1,863,275.49 = 777,128.13 : x - Step 2: Convert to fraction form
1,349,859.69/1,863,275.49 = 777,128.13/x - Step 3: Cross multiply
1,349,859.69x = 1,863,275.49 × 777,128.13 - Step 4: Simplify right side
1,349,859.69x = 1,448,003,797,218.53 - Step 5: Solve for x
x = 1,448,003,797,218.53/1,349,859.69 - Step 6: Final answer
x = 1,072,706.90
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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.