Finding the Fourth Proportional to 7,432,879.80, 11,149,319.70 and 2,645,974.20
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Solution
The fourth proportional to 7,432,879.80, 11,149,319.70 and 2,645,974.20 is: 3,968,961.30
Step by Step Solution
- Step 1: Write the proportion equation
7,432,879.80 : 11,149,319.70 = 2,645,974.20 : x - Step 2: Convert to fraction form
7,432,879.80/11,149,319.70 = 2,645,974.20/x - Step 3: Cross multiply
7,432,879.80x = 11,149,319.70 × 2,645,974.20 - Step 4: Simplify right side
7,432,879.80x = 29,500,812,273,751.74 - Step 5: Solve for x
x = 29,500,812,273,751.74/7,432,879.80 - Step 6: Final answer
x = 3,968,961.30
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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.