Finding the Fourth Proportional to 605,539.40, 908,309.10 and 392,649.80
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Solution
The fourth proportional to 605,539.40, 908,309.10 and 392,649.80 is: 588,974.70
Step by Step Solution
- Step 1: Write the proportion equation
605,539.40 : 908,309.10 = 392,649.80 : x - Step 2: Convert to fraction form
605,539.40/908,309.10 = 392,649.80/x - Step 3: Cross multiply
605,539.40x = 908,309.10 × 392,649.80 - Step 4: Simplify right side
605,539.40x = 356,647,386,453.18 - Step 5: Solve for x
x = 356,647,386,453.18/605,539.40 - Step 6: Final answer
x = 588,974.70
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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.