Finding the Fourth Proportional to 804,998.60, 1,207,497.90 and 431,750.60
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Solution
The fourth proportional to 804,998.60, 1,207,497.90 and 431,750.60 is: 647,625.90
Step by Step Solution
- Step 1: Write the proportion equation
804,998.60 : 1,207,497.90 = 431,750.60 : x - Step 2: Convert to fraction form
804,998.60/1,207,497.90 = 431,750.60/x - Step 3: Cross multiply
804,998.60x = 1,207,497.90 × 431,750.60 - Step 4: Simplify right side
804,998.60x = 521,337,942,823.74 - Step 5: Solve for x
x = 521,337,942,823.74/804,998.60 - Step 6: Final answer
x = 647,625.90
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Similar ratio
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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.