Finding the Fourth Proportional to 1,813,431,040.40, 2,720,146,560.60 and 664,424,397.20
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Solution
The fourth proportional to 1,813,431,040.40, 2,720,146,560.60 and 664,424,397.20 is: 996,636,595.80
Step by Step Solution
- Step 1: Write the proportion equation
1,813,431,040.40 : 2,720,146,560.60 = 664,424,397.20 : x - Step 2: Convert to fraction form
1,813,431,040.40/2,720,146,560.60 = 664,424,397.20/x - Step 3: Cross multiply
1,813,431,040.40x = 2,720,146,560.60 × 664,424,397.20 - Step 4: Simplify right side
1,813,431,040.40x = 1,807,331,738,822,308,352 - Step 5: Solve for x
x = 1,807,331,738,822,308,352/1,813,431,040.40 - Step 6: Final answer
x = 996,636,595.80
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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.