Finding the Fourth Proportional to 1,119,747,230.20, 1,679,620,845.30 and 712,608,311.80
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Solution
The fourth proportional to 1,119,747,230.20, 1,679,620,845.30 and 712,608,311.80 is: 1,068,912,467.70
Step by Step Solution
- Step 1: Write the proportion equation
1,119,747,230.20 : 1,679,620,845.30 = 712,608,311.80 : x - Step 2: Convert to fraction form
1,119,747,230.20/1,679,620,845.30 = 712,608,311.80/x - Step 3: Cross multiply
1,119,747,230.20x = 1,679,620,845.30 × 712,608,311.80 - Step 4: Simplify right side
1,119,747,230.20x = 1,196,911,775,033,321,728 - Step 5: Solve for x
x = 1,196,911,775,033,321,728/1,119,747,230.20 - Step 6: Final answer
x = 1,068,912,467.70
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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.