Finding the Fourth Proportional to 2,807,888,631.70, 4,211,832,947.55 and 1,991,595,255.70
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Solution
The fourth proportional to 2,807,888,631.70, 4,211,832,947.55 and 1,991,595,255.70 is: 2,987,392,883.55
Step by Step Solution
- Step 1: Write the proportion equation
2,807,888,631.70 : 4,211,832,947.55 = 1,991,595,255.70 : x - Step 2: Convert to fraction form
2,807,888,631.70/4,211,832,947.55 = 1,991,595,255.70/x - Step 3: Cross multiply
2,807,888,631.70x = 4,211,832,947.55 × 1,991,595,255.70 - Step 4: Simplify right side
2,807,888,631.70x = 8,388,266,516,141,527,040 - Step 5: Solve for x
x = 8,388,266,516,141,527,040/2,807,888,631.70 - Step 6: Final answer
x = 2,987,392,883.55
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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.