Finding the Fourth Proportional to 1,919,721.96, 2,879,287.02 and 640,351.80
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Solution
The fourth proportional to 1,919,721.96, 2,879,287.02 and 640,351.80 is: 960,428.99
Step by Step Solution
- Step 1: Write the proportion equation
1,919,721.96 : 2,879,287.02 = 640,351.80 : x - Step 2: Convert to fraction form
1,919,721.96/2,879,287.02 = 640,351.80/x - Step 3: Cross multiply
1,919,721.96x = 2,879,287.02 × 640,351.80 - Step 4: Simplify right side
1,919,721.96x = 1,843,756,625,973.64 - Step 5: Solve for x
x = 1,843,756,625,973.64/1,919,721.96 - Step 6: Final answer
x = 960,428.99
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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.