Finding the Fourth Proportional to 1,948,627,847.70, 2,922,941,771.55 and 915,506,543.70
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Solution
The fourth proportional to 1,948,627,847.70, 2,922,941,771.55 and 915,506,543.70 is: 1,373,259,815.55
Step by Step Solution
- Step 1: Write the proportion equation
1,948,627,847.70 : 2,922,941,771.55 = 915,506,543.70 : x - Step 2: Convert to fraction form
1,948,627,847.70/2,922,941,771.55 = 915,506,543.70/x - Step 3: Cross multiply
1,948,627,847.70x = 2,922,941,771.55 × 915,506,543.70 - Step 4: Simplify right side
1,948,627,847.70x = 2,675,972,318,708,096,000 - Step 5: Solve for x
x = 2,675,972,318,708,096,000/1,948,627,847.70 - Step 6: Final answer
x = 1,373,259,815.55
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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.