Finding the Fourth Proportional to 1,315,880,759.68, 1,971,744,675.36 and 485,691,749.44
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Solution
The fourth proportional to 1,315,880,759.68, 1,971,744,675.36 and 485,691,749.44 is: 727,771,200.98
Step by Step Solution
- Step 1: Write the proportion equation
1,315,880,759.68 : 1,971,744,675.36 = 485,691,749.44 : x - Step 2: Convert to fraction form
1,315,880,759.68/1,971,744,675.36 = 485,691,749.44/x - Step 3: Cross multiply
1,315,880,759.68x = 1,971,744,675.36 × 485,691,749.44 - Step 4: Simplify right side
1,315,880,759.68x = 957,660,120,824,603,264 - Step 5: Solve for x
x = 957,660,120,824,603,264/1,315,880,759.68 - Step 6: Final answer
x = 727,771,200.98
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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.