Finding the Fourth Proportional to 438,213.42, 655,590.62 and 331,903.68
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Solution
The fourth proportional to 438,213.42, 655,590.62 and 331,903.68 is: 496,545.59
Step by Step Solution
- Step 1: Write the proportion equation
438,213.42 : 655,590.62 = 331,903.68 : x - Step 2: Convert to fraction form
438,213.42/655,590.62 = 331,903.68/x - Step 3: Cross multiply
438,213.42x = 655,590.62 × 331,903.68 - Step 4: Simplify right side
438,213.42x = 217,592,939,351.48 - Step 5: Solve for x
x = 217,592,939,351.48/438,213.42 - Step 6: Final answer
x = 496,545.59
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1.5x scale
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.