Finding the Fourth Proportional to 1,457,110.80, 2,010,571.20 and 812,512.80
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Solution
The fourth proportional to 1,457,110.80, 2,010,571.20 and 812,512.80 is: 1,121,132.89
Step by Step Solution
- Step 1: Write the proportion equation
1,457,110.80 : 2,010,571.20 = 812,512.80 : x - Step 2: Convert to fraction form
1,457,110.80/2,010,571.20 = 812,512.80/x - Step 3: Cross multiply
1,457,110.80x = 2,010,571.20 × 812,512.80 - Step 4: Simplify right side
1,457,110.80x = 1,633,614,835,311.36 - Step 5: Solve for x
x = 1,633,614,835,311.36/1,457,110.80 - Step 6: Final answer
x = 1,121,132.89
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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.