Finding the Fourth Proportional to 1,207,859.91, 1,811,742.58 and 409,141.45
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Solution
The fourth proportional to 1,207,859.91, 1,811,742.58 and 409,141.45 is: 613,696.16
Step by Step Solution
- Step 1: Write the proportion equation
1,207,859.91 : 1,811,742.58 = 409,141.45 : x - Step 2: Convert to fraction form
1,207,859.91/1,811,742.58 = 409,141.45/x - Step 3: Cross multiply
1,207,859.91x = 1,811,742.58 × 409,141.45 - Step 4: Simplify right side
1,207,859.91x = 741,258,990,846.78 - Step 5: Solve for x
x = 741,258,990,846.78/1,207,859.91 - Step 6: Final answer
x = 613,696.16
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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.