Finding the Fourth Proportional to 5,431,225.32, 8,146,836.77 and 1,387,720.71
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Solution
The fourth proportional to 5,431,225.32, 8,146,836.77 and 1,387,720.71 is: 2,081,580.75
Step by Step Solution
- Step 1: Write the proportion equation
5,431,225.32 : 8,146,836.77 = 1,387,720.71 : x - Step 2: Convert to fraction form
5,431,225.32/8,146,836.77 = 1,387,720.71/x - Step 3: Cross multiply
5,431,225.32x = 8,146,836.77 × 1,387,720.71 - Step 4: Simplify right side
5,431,225.32x = 11,305,534,099,779.90 - Step 5: Solve for x
x = 11,305,534,099,779.90/5,431,225.32 - Step 6: Final answer
x = 2,081,580.75
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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.