Finding the Fourth Proportional to 804,938.10, 1,207,407.15 and 431,690.10
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Solution
The fourth proportional to 804,938.10, 1,207,407.15 and 431,690.10 is: 647,535.15
Step by Step Solution
- Step 1: Write the proportion equation
804,938.10 : 1,207,407.15 = 431,690.10 : x - Step 2: Convert to fraction form
804,938.10/1,207,407.15 = 431,690.10/x - Step 3: Cross multiply
804,938.10x = 1,207,407.15 × 431,690.10 - Step 4: Simplify right side
804,938.10x = 521,225,713,324.22 - Step 5: Solve for x
x = 521,225,713,324.22/804,938.10 - Step 6: Final answer
x = 647,535.15
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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.