Finding the Fourth Proportional to 6,438,628.20, 9,659,108.70 and 3,235,693.80
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Solution
The fourth proportional to 6,438,628.20, 9,659,108.70 and 3,235,693.80 is: 4,854,126.87
Step by Step Solution
- Step 1: Write the proportion equation
6,438,628.20 : 9,659,108.70 = 3,235,693.80 : x - Step 2: Convert to fraction form
6,438,628.20/9,659,108.70 = 3,235,693.80/x - Step 3: Cross multiply
6,438,628.20x = 9,659,108.70 × 3,235,693.80 - Step 4: Simplify right side
6,438,628.20x = 31,253,918,134,116.05 - Step 5: Solve for x
x = 31,253,918,134,116.05/6,438,628.20 - Step 6: Final answer
x = 4,854,126.87
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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.