Finding the Fourth Proportional to 1,288,786.26, 1,778,525.16 and 715,879.74
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Solution
The fourth proportional to 1,288,786.26, 1,778,525.16 and 715,879.74 is: 987,914.11
Step by Step Solution
- Step 1: Write the proportion equation
1,288,786.26 : 1,778,525.16 = 715,879.74 : x - Step 2: Convert to fraction form
1,288,786.26/1,778,525.16 = 715,879.74/x - Step 3: Cross multiply
1,288,786.26x = 1,778,525.16 × 715,879.74 - Step 4: Simplify right side
1,288,786.26x = 1,273,210,129,124.26 - Step 5: Solve for x
x = 1,273,210,129,124.26/1,288,786.26 - Step 6: Final answer
x = 987,914.11
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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.