Finding the Fourth Proportional to 1,389,840.36, 1,919,176.74 and 874,453.56
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Solution
The fourth proportional to 1,389,840.36, 1,919,176.74 and 874,453.56 is: 1,207,499.06
Step by Step Solution
- Step 1: Write the proportion equation
1,389,840.36 : 1,919,176.74 = 874,453.56 : x - Step 2: Convert to fraction form
1,389,840.36/1,919,176.74 = 874,453.56/x - Step 3: Cross multiply
1,389,840.36x = 1,919,176.74 × 874,453.56 - Step 4: Simplify right side
1,389,840.36x = 1,678,230,932,562.19 - Step 5: Solve for x
x = 1,678,230,932,562.19/1,389,840.36 - Step 6: Final answer
x = 1,207,499.06
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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.