Finding the Fourth Proportional to 4,688,128,189.28, 6,469,379,314.26 and 2,782,971,100.19
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Solution
The fourth proportional to 4,688,128,189.28, 6,469,379,314.26 and 2,782,971,100.19 is: 3,840,359,081.67
Step by Step Solution
- Step 1: Write the proportion equation
4,688,128,189.28 : 6,469,379,314.26 = 2,782,971,100.19 : x - Step 2: Convert to fraction form
4,688,128,189.28/6,469,379,314.26 = 2,782,971,100.19/x - Step 3: Cross multiply
4,688,128,189.28x = 6,469,379,314.26 × 2,782,971,100.19 - Step 4: Simplify right side
4,688,128,189.28x = 18,004,095,667,720,232,960 - Step 5: Solve for x
x = 18,004,095,667,720,232,960/4,688,128,189.28 - Step 6: Final answer
x = 3,840,359,081.67
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.