Finding the Fourth Proportional to 621,128.89, 857,152.69 and 349,197.99
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Solution
The fourth proportional to 621,128.89, 857,152.69 and 349,197.99 is: 481,890.32
Step by Step Solution
- Step 1: Write the proportion equation
621,128.89 : 857,152.69 = 349,197.99 : x - Step 2: Convert to fraction form
621,128.89/857,152.69 = 349,197.99/x - Step 3: Cross multiply
621,128.89x = 857,152.69 × 349,197.99 - Step 4: Simplify right side
621,128.89x = 299,315,996,471.09 - Step 5: Solve for x
x = 299,315,996,471.09/621,128.89 - Step 6: Final answer
x = 481,890.32
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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.