Finding the Fourth Proportional to 1,145,986.12, 1,717,910.79 and 387,297.09
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Solution
The fourth proportional to 1,145,986.12, 1,717,910.79 and 387,297.09 is: 580,584.56
Step by Step Solution
- Step 1: Write the proportion equation
1,145,986.12 : 1,717,910.79 = 387,297.09 : x - Step 2: Convert to fraction form
1,145,986.12/1,717,910.79 = 387,297.09/x - Step 3: Cross multiply
1,145,986.12x = 1,717,910.79 × 387,297.09 - Step 4: Simplify right side
1,145,986.12x = 665,341,849,846.60 - Step 5: Solve for x
x = 665,341,849,846.60/1,145,986.12 - Step 6: Final answer
x = 580,584.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.