Finding the Fourth Proportional to 6,912,658.20, 10,368,987.30 and 4,391,160.60
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Solution
The fourth proportional to 6,912,658.20, 10,368,987.30 and 4,391,160.60 is: 6,586,740.90
Step by Step Solution
- Step 1: Write the proportion equation
6,912,658.20 : 10,368,987.30 = 4,391,160.60 : x - Step 2: Convert to fraction form
6,912,658.20/10,368,987.30 = 4,391,160.60/x - Step 3: Cross multiply
6,912,658.20x = 10,368,987.30 × 4,391,160.60 - Step 4: Simplify right side
6,912,658.20x = 45,531,888,493,660.38 - Step 5: Solve for x
x = 45,531,888,493,660.38/6,912,658.20 - Step 6: Final answer
x = 6,586,740.90
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Double scale
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Similar ratio
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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.