Finding the Fourth Proportional to 1,272,639.36, 1,756,243.52 and 699,689.28
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Solution
The fourth proportional to 1,272,639.36, 1,756,243.52 and 699,689.28 is: 965,571.87
Step by Step Solution
- Step 1: Write the proportion equation
1,272,639.36 : 1,756,243.52 = 699,689.28 : x - Step 2: Convert to fraction form
1,272,639.36/1,756,243.52 = 699,689.28/x - Step 3: Cross multiply
1,272,639.36x = 1,756,243.52 × 699,689.28 - Step 4: Simplify right side
1,272,639.36x = 1,228,824,764,013.47 - Step 5: Solve for x
x = 1,228,824,764,013.47/1,272,639.36 - Step 6: Final answer
x = 965,571.87
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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.