Finding the Fourth Proportional to 850,941.70, 1,276,412.55 and 431,037.70
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Solution
The fourth proportional to 850,941.70, 1,276,412.55 and 431,037.70 is: 646,556.55
Step by Step Solution
- Step 1: Write the proportion equation
850,941.70 : 1,276,412.55 = 431,037.70 : x - Step 2: Convert to fraction form
850,941.70/1,276,412.55 = 431,037.70/x - Step 3: Cross multiply
850,941.70x = 1,276,412.55 × 431,037.70 - Step 4: Simplify right side
850,941.70x = 550,181,929,803.14 - Step 5: Solve for x
x = 550,181,929,803.14/850,941.70 - Step 6: Final answer
x = 646,556.55
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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.