Finding the Fourth Proportional to 5,173,728.32, 7,720,129.84 and 4,635,769.28
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Solution
The fourth proportional to 5,173,728.32, 7,720,129.84 and 4,635,769.28 is: 6,917,398.54
Step by Step Solution
- Step 1: Write the proportion equation
5,173,728.32 : 7,720,129.84 = 4,635,769.28 : x - Step 2: Convert to fraction form
5,173,728.32/7,720,129.84 = 4,635,769.28/x - Step 3: Cross multiply
5,173,728.32x = 7,720,129.84 × 4,635,769.28 - Step 4: Simplify right side
5,173,728.32x = 35,788,740,749,883.32 - Step 5: Solve for x
x = 35,788,740,749,883.32/5,173,728.32 - Step 6: Final answer
x = 6,917,398.54
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.