Finding the Fourth Proportional to 7,821,349.40, 11,725,025.70 and 5,126,965.40
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Solution
The fourth proportional to 7,821,349.40, 11,725,025.70 and 5,126,965.40 is: 7,685,860.59
Step by Step Solution
- Step 1: Write the proportion equation
7,821,349.40 : 11,725,025.70 = 5,126,965.40 : x - Step 2: Convert to fraction form
7,821,349.40/11,725,025.70 = 5,126,965.40/x - Step 3: Cross multiply
7,821,349.40x = 11,725,025.70 × 5,126,965.40 - Step 4: Simplify right side
7,821,349.40x = 60,113,801,078,010.78 - Step 5: Solve for x
x = 60,113,801,078,010.78/7,821,349.40 - Step 6: Final answer
x = 7,685,860.59
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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.