Finding the Fourth Proportional to 7,121,947.80, 10,682,921.70 and 3,342,811.80
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Solution
The fourth proportional to 7,121,947.80, 10,682,921.70 and 3,342,811.80 is: 5,014,217.70
Step by Step Solution
- Step 1: Write the proportion equation
7,121,947.80 : 10,682,921.70 = 3,342,811.80 : x - Step 2: Convert to fraction form
7,121,947.80/10,682,921.70 = 3,342,811.80/x - Step 3: Cross multiply
7,121,947.80x = 10,682,921.70 × 3,342,811.80 - Step 4: Simplify right side
7,121,947.80x = 35,710,996,717,236.05 - Step 5: Solve for x
x = 35,710,996,717,236.05/7,121,947.80 - Step 6: Final answer
x = 5,014,217.70
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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.