Finding the Fourth Proportional to 1,216,035.15, 1,678,295.21 and 699,778.45
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Solution
The fourth proportional to 1,216,035.15, 1,678,295.21 and 699,778.45 is: 965,790.19
Step by Step Solution
- Step 1: Write the proportion equation
1,216,035.15 : 1,678,295.21 = 699,778.45 : x - Step 2: Convert to fraction form
1,216,035.15/1,678,295.21 = 699,778.45/x - Step 3: Cross multiply
1,216,035.15x = 1,678,295.21 × 699,778.45 - Step 4: Simplify right side
1,216,035.15x = 1,174,434,820,696.22 - Step 5: Solve for x
x = 1,174,434,820,696.22/1,216,035.15 - Step 6: Final answer
x = 965,790.19
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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.