Finding the Fourth Proportional to 7,380,998.30, 11,071,497.45 and 5,491,430.30
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Solution
The fourth proportional to 7,380,998.30, 11,071,497.45 and 5,491,430.30 is: 8,237,145.45
Step by Step Solution
- Step 1: Write the proportion equation
7,380,998.30 : 11,071,497.45 = 5,491,430.30 : x - Step 2: Convert to fraction form
7,380,998.30/11,071,497.45 = 5,491,430.30/x - Step 3: Cross multiply
7,380,998.30x = 11,071,497.45 × 5,491,430.30 - Step 4: Simplify right side
7,380,998.30x = 60,798,356,563,302.73 - Step 5: Solve for x
x = 60,798,356,563,302.73/7,380,998.30 - Step 6: Final answer
x = 8,237,145.45
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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.