Finding the Fourth Proportional to 7,489,620.60, 11,234,430.90 and 6,355,879.80
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Solution
The fourth proportional to 7,489,620.60, 11,234,430.90 and 6,355,879.80 is: 9,533,819.70
Step by Step Solution
- Step 1: Write the proportion equation
7,489,620.60 : 11,234,430.90 = 6,355,879.80 : x - Step 2: Convert to fraction form
7,489,620.60/11,234,430.90 = 6,355,879.80/x - Step 3: Cross multiply
7,489,620.60x = 11,234,430.90 × 6,355,879.80 - Step 4: Simplify right side
7,489,620.60x = 71,404,692,421,805.81 - Step 5: Solve for x
x = 71,404,692,421,805.81/7,489,620.60 - Step 6: Final answer
x = 9,533,819.70
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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.