Finding the Fourth Proportional to 431,542.68, 647,313.12 and 115,999.62
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Solution
The fourth proportional to 431,542.68, 647,313.12 and 115,999.62 is: 173,999.19
Step by Step Solution
- Step 1: Write the proportion equation
431,542.68 : 647,313.12 = 115,999.62 : x - Step 2: Convert to fraction form
431,542.68/647,313.12 = 115,999.62/x - Step 3: Cross multiply
431,542.68x = 647,313.12 × 115,999.62 - Step 4: Simplify right side
431,542.68x = 75,088,075,941.01 - Step 5: Solve for x
x = 75,088,075,941.01/431,542.68 - Step 6: Final answer
x = 173,999.19
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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.