Finding the Fourth Proportional to 387,467.80, 581,201.70 and 339,256.60
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Solution
The fourth proportional to 387,467.80, 581,201.70 and 339,256.60 is: 508,884.90
Step by Step Solution
- Step 1: Write the proportion equation
387,467.80 : 581,201.70 = 339,256.60 : x - Step 2: Convert to fraction form
387,467.80/581,201.70 = 339,256.60/x - Step 3: Cross multiply
387,467.80x = 581,201.70 × 339,256.60 - Step 4: Simplify right side
387,467.80x = 197,176,512,656.22 - Step 5: Solve for x
x = 197,176,512,656.22/387,467.80 - Step 6: Final answer
x = 508,884.90
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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.