Finding the Fourth Proportional to 660,571.83, 911,590.88 and 388,649.97
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Solution
The fourth proportional to 660,571.83, 911,590.88 and 388,649.97 is: 536,337.99
Step by Step Solution
- Step 1: Write the proportion equation
660,571.83 : 911,590.88 = 388,649.97 : x - Step 2: Convert to fraction form
660,571.83/911,590.88 = 388,649.97/x - Step 3: Cross multiply
660,571.83x = 911,590.88 × 388,649.97 - Step 4: Simplify right side
660,571.83x = 354,289,766,221.02 - Step 5: Solve for x
x = 354,289,766,221.02/660,571.83 - Step 6: Final answer
x = 536,337.99
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1.5x scale
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.