Finding the Fourth Proportional to 640,519.20, 960,122.70 and 374,142.60
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Solution
The fourth proportional to 640,519.20, 960,122.70 and 374,142.60 is: 560,830.66
Step by Step Solution
- Step 1: Write the proportion equation
640,519.20 : 960,122.70 = 374,142.60 : x - Step 2: Convert to fraction form
640,519.20/960,122.70 = 374,142.60/x - Step 3: Cross multiply
640,519.20x = 960,122.70 × 374,142.60 - Step 4: Simplify right side
640,519.20x = 359,222,803,297.02 - Step 5: Solve for x
x = 359,222,803,297.02/640,519.20 - Step 6: Final answer
x = 560,830.66
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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.