Finding the Fourth Proportional to 6,438,979,212.80, 9,658,468,819.20 and 5,149,034,124.80
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Solution
The fourth proportional to 6,438,979,212.80, 9,658,468,819.20 and 5,149,034,124.80 is: 7,723,551,187.20
Step by Step Solution
- Step 1: Write the proportion equation
6,438,979,212.80 : 9,658,468,819.20 = 5,149,034,124.80 : x - Step 2: Convert to fraction form
6,438,979,212.80/9,658,468,819.20 = 5,149,034,124.80/x - Step 3: Cross multiply
6,438,979,212.80x = 9,658,468,819.20 × 5,149,034,124.80 - Step 4: Simplify right side
6,438,979,212.80x = 49,731,785,543,377,567,744 - Step 5: Solve for x
x = 49,731,785,543,377,567,744/6,438,979,212.80 - Step 6: Final answer
x = 7,723,551,187.20
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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.