Finding the Fourth Proportional to 548,415.20, 822,622.80 and 512,985.80
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Solution
The fourth proportional to 548,415.20, 822,622.80 and 512,985.80 is: 769,478.70
Step by Step Solution
- Step 1: Write the proportion equation
548,415.20 : 822,622.80 = 512,985.80 : x - Step 2: Convert to fraction form
548,415.20/822,622.80 = 512,985.80/x - Step 3: Cross multiply
548,415.20x = 822,622.80 × 512,985.80 - Step 4: Simplify right side
548,415.20x = 421,993,815,156.24 - Step 5: Solve for x
x = 421,993,815,156.24/548,415.20 - Step 6: Final answer
x = 769,478.70
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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.