Finding the Fourth Proportional to 1,245,109.14, 1,718,372.83 and 728,831.94
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Solution
The fourth proportional to 1,245,109.14, 1,718,372.83 and 728,831.94 is: 1,005,859.63
Step by Step Solution
- Step 1: Write the proportion equation
1,245,109.14 : 1,718,372.83 = 728,831.94 : x - Step 2: Convert to fraction form
1,245,109.14/1,718,372.83 = 728,831.94/x - Step 3: Cross multiply
1,245,109.14x = 1,718,372.83 × 728,831.94 - Step 4: Simplify right side
1,245,109.14x = 1,252,405,009,450.20 - Step 5: Solve for x
x = 1,252,405,009,450.20/1,245,109.14 - Step 6: Final answer
x = 1,005,859.63
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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.