Finding the Fourth Proportional to 1,128,299.36, 1,557,190.80 and 644,884.88
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Solution
The fourth proportional to 1,128,299.36, 1,557,190.80 and 644,884.88 is: 890,019.83
Step by Step Solution
- Step 1: Write the proportion equation
1,128,299.36 : 1,557,190.80 = 644,884.88 : x - Step 2: Convert to fraction form
1,128,299.36/1,557,190.80 = 644,884.88/x - Step 3: Cross multiply
1,128,299.36x = 1,557,190.80 × 644,884.88 - Step 4: Simplify right side
1,128,299.36x = 1,004,208,802,195.10 - Step 5: Solve for x
x = 1,004,208,802,195.10/1,128,299.36 - Step 6: Final answer
x = 890,019.83
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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.