Finding the Fourth Proportional to 1,321,128.66, 1,823,161.08 and 777,284.94
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Solution
The fourth proportional to 1,321,128.66, 1,823,161.08 and 777,284.94 is: 1,072,655.29
Step by Step Solution
- Step 1: Write the proportion equation
1,321,128.66 : 1,823,161.08 = 777,284.94 : x - Step 2: Convert to fraction form
1,321,128.66/1,823,161.08 = 777,284.94/x - Step 3: Cross multiply
1,321,128.66x = 1,823,161.08 × 777,284.94 - Step 4: Simplify right side
1,321,128.66x = 1,417,115,650,678.14 - Step 5: Solve for x
x = 1,417,115,650,678.14/1,321,128.66 - Step 6: Final answer
x = 1,072,655.29
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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.