Finding the Fourth Proportional to 2,988,142,742.70, 4,482,214,114.05 and 917,861,183.10
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Solution
The fourth proportional to 2,988,142,742.70, 4,482,214,114.05 and 917,861,183.10 is: 1,376,791,774.65
Step by Step Solution
- Step 1: Write the proportion equation
2,988,142,742.70 : 4,482,214,114.05 = 917,861,183.10 : x - Step 2: Convert to fraction form
2,988,142,742.70/4,482,214,114.05 = 917,861,183.10/x - Step 3: Cross multiply
2,988,142,742.70x = 4,482,214,114.05 × 917,861,183.10 - Step 4: Simplify right side
2,988,142,742.70x = 4,114,050,349,629,451,776 - Step 5: Solve for x
x = 4,114,050,349,629,451,776/2,988,142,742.70 - Step 6: Final answer
x = 1,376,791,774.65
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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.