Finding the Fourth Proportional to 1,261,899,425.80, 1,892,849,138.70 and 744,577,697.80
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Solution
The fourth proportional to 1,261,899,425.80, 1,892,849,138.70 and 744,577,697.80 is: 1,116,866,546.70
Step by Step Solution
- Step 1: Write the proportion equation
1,261,899,425.80 : 1,892,849,138.70 = 744,577,697.80 : x - Step 2: Convert to fraction form
1,261,899,425.80/1,892,849,138.70 = 744,577,697.80/x - Step 3: Cross multiply
1,261,899,425.80x = 1,892,849,138.70 × 744,577,697.80 - Step 4: Simplify right side
1,261,899,425.80x = 1,409,373,253,975,958,784 - Step 5: Solve for x
x = 1,409,373,253,975,958,784/1,261,899,425.80 - Step 6: Final answer
x = 1,116,866,546.70
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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.