Finding the Fourth Proportional to 647,625.80, 971,438.70 and 398,793.80
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Solution
The fourth proportional to 647,625.80, 971,438.70 and 398,793.80 is: 598,190.70
Step by Step Solution
- Step 1: Write the proportion equation
647,625.80 : 971,438.70 = 398,793.80 : x - Step 2: Convert to fraction form
647,625.80/971,438.70 = 398,793.80/x - Step 3: Cross multiply
647,625.80x = 971,438.70 × 398,793.80 - Step 4: Simplify right side
647,625.80x = 387,403,730,640.06 - Step 5: Solve for x
x = 387,403,730,640.06/647,625.80 - Step 6: Final answer
x = 598,190.70
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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.