Finding the Fourth Proportional to 1,626,235.61, 2,439,131.99 and 428,057.60
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Solution
The fourth proportional to 1,626,235.61, 2,439,131.99 and 428,057.60 is: 642,028.11
Step by Step Solution
- Step 1: Write the proportion equation
1,626,235.61 : 2,439,131.99 = 428,057.60 : x - Step 2: Convert to fraction form
1,626,235.61/2,439,131.99 = 428,057.60/x - Step 3: Cross multiply
1,626,235.61x = 2,439,131.99 × 428,057.60 - Step 4: Simplify right side
1,626,235.61x = 1,044,088,971,386.68 - Step 5: Solve for x
x = 1,044,088,971,386.68/1,626,235.61 - Step 6: Final answer
x = 642,028.11
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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.