Finding the Fourth Proportional to 1,626,343.70, 2,439,635.36 and 428,257.71
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Solution
The fourth proportional to 1,626,343.70, 2,439,635.36 and 428,257.71 is: 642,418.11
Step by Step Solution
- Step 1: Write the proportion equation
1,626,343.70 : 2,439,635.36 = 428,257.71 : x - Step 2: Convert to fraction form
1,626,343.70/2,439,635.36 = 428,257.71/x - Step 3: Cross multiply
1,626,343.70x = 2,439,635.36 × 428,257.71 - Step 4: Simplify right side
1,626,343.70x = 1,044,792,650,367.34 - Step 5: Solve for x
x = 1,044,792,650,367.34/1,626,343.70 - Step 6: Final answer
x = 642,418.11
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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.