Finding the Fourth Proportional to 1,101,377.26, 1,519,996.80 and 642,639.62
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Solution
The fourth proportional to 1,101,377.26, 1,519,996.80 and 642,639.62 is: 886,898.80
Step by Step Solution
- Step 1: Write the proportion equation
1,101,377.26 : 1,519,996.80 = 642,639.62 : x - Step 2: Convert to fraction form
1,101,377.26/1,519,996.80 = 642,639.62/x - Step 3: Cross multiply
1,101,377.26x = 1,519,996.80 × 642,639.62 - Step 4: Simplify right side
1,101,377.26x = 976,810,165,393.15 - Step 5: Solve for x
x = 976,810,165,393.15/1,101,377.26 - Step 6: Final answer
x = 886,898.80
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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.