Finding the Fourth Proportional to 2,518,381.20, 3,777,571.80 and 2,128,657.80
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Solution
The fourth proportional to 2,518,381.20, 3,777,571.80 and 2,128,657.80 is: 3,192,986.70
Step by Step Solution
- Step 1: Write the proportion equation
2,518,381.20 : 3,777,571.80 = 2,128,657.80 : x - Step 2: Convert to fraction form
2,518,381.20/3,777,571.80 = 2,128,657.80/x - Step 3: Cross multiply
2,518,381.20x = 3,777,571.80 × 2,128,657.80 - Step 4: Simplify right side
2,518,381.20x = 8,041,157,677,130.04 - Step 5: Solve for x
x = 8,041,157,677,130.04/2,518,381.20 - Step 6: Final answer
x = 3,192,986.70
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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.