Finding the Fourth Proportional to 431,750.80, 647,626.20 and 386,261.20
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Solution
The fourth proportional to 431,750.80, 647,626.20 and 386,261.20 is: 579,391.80
Step by Step Solution
- Step 1: Write the proportion equation
431,750.80 : 647,626.20 = 386,261.20 : x - Step 2: Convert to fraction form
431,750.80/647,626.20 = 386,261.20/x - Step 3: Cross multiply
431,750.80x = 647,626.20 × 386,261.20 - Step 4: Simplify right side
431,750.80x = 250,152,873,163.44 - Step 5: Solve for x
x = 250,152,873,163.44/431,750.80 - Step 6: Final answer
x = 579,391.80
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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.