Finding the Fourth Proportional to 10,320,349.60, 15,497,048.40 and 8,207,999.20
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Solution
The fourth proportional to 10,320,349.60, 15,497,048.40 and 8,207,999.20 is: 12,325,140.70
Step by Step Solution
- Step 1: Write the proportion equation
10,320,349.60 : 15,497,048.40 = 8,207,999.20 : x - Step 2: Convert to fraction form
10,320,349.60/15,497,048.40 = 8,207,999.20/x - Step 3: Cross multiply
10,320,349.60x = 15,497,048.40 × 8,207,999.20 - Step 4: Simplify right side
10,320,349.60x = 127,199,760,869,561.28 - Step 5: Solve for x
x = 127,199,760,869,561.28/10,320,349.60 - Step 6: Final answer
x = 12,325,140.70
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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.