Finding the Fourth Proportional to 428,223.12, 590,709.84 and 337,243.92
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Solution
The fourth proportional to 428,223.12, 590,709.84 and 337,243.92 is: 465,209.12
Step by Step Solution
- Step 1: Write the proportion equation
428,223.12 : 590,709.84 = 337,243.92 : x - Step 2: Convert to fraction form
428,223.12/590,709.84 = 337,243.92/x - Step 3: Cross multiply
428,223.12x = 590,709.84 × 337,243.92 - Step 4: Simplify right side
428,223.12x = 199,213,302,024.17 - Step 5: Solve for x
x = 199,213,302,024.17/428,223.12 - Step 6: Final answer
x = 465,209.12
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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.