Finding the Fourth Proportional to 8,972,245.80, 13,458,368.70 and 5,193,109.80
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Solution
The fourth proportional to 8,972,245.80, 13,458,368.70 and 5,193,109.80 is: 7,789,664.70
Step by Step Solution
- Step 1: Write the proportion equation
8,972,245.80 : 13,458,368.70 = 5,193,109.80 : x - Step 2: Convert to fraction form
8,972,245.80/13,458,368.70 = 5,193,109.80/x - Step 3: Cross multiply
8,972,245.80x = 13,458,368.70 × 5,193,109.80 - Step 4: Simplify right side
8,972,245.80x = 69,890,786,387,983.25 - Step 5: Solve for x
x = 69,890,786,387,983.25/8,972,245.80 - Step 6: Final answer
x = 7,789,664.70
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Double scale
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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.