Finding the Fourth Proportional to 621,342.63, 857,457.77 and 345,704.49
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Solution
The fourth proportional to 621,342.63, 857,457.77 and 345,704.49 is: 477,074.94
Step by Step Solution
- Step 1: Write the proportion equation
621,342.63 : 857,457.77 = 345,704.49 : x - Step 2: Convert to fraction form
621,342.63/857,457.77 = 345,704.49/x - Step 3: Cross multiply
621,342.63x = 857,457.77 × 345,704.49 - Step 4: Simplify right side
621,342.63x = 296,426,999,345.87 - Step 5: Solve for x
x = 296,426,999,345.87/621,342.63 - Step 6: Final answer
x = 477,074.94
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.