Finding the Fourth Proportional to 1,207,251,722.70, 1,810,877,584.05 and 430,922,709.90
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Solution
The fourth proportional to 1,207,251,722.70, 1,810,877,584.05 and 430,922,709.90 is: 646,384,064.85
Step by Step Solution
- Step 1: Write the proportion equation
1,207,251,722.70 : 1,810,877,584.05 = 430,922,709.90 : x - Step 2: Convert to fraction form
1,207,251,722.70/1,810,877,584.05 = 430,922,709.90/x - Step 3: Cross multiply
1,207,251,722.70x = 1,810,877,584.05 × 430,922,709.90 - Step 4: Simplify right side
1,207,251,722.70x = 780,348,275,815,990,912 - Step 5: Solve for x
x = 780,348,275,815,990,912/1,207,251,722.70 - Step 6: Final answer
x = 646,384,064.85
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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.