Finding the Fourth Proportional to 3,138,992.16, 4,331,509.68 and 1,762,020.48
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Solution
The fourth proportional to 3,138,992.16, 4,331,509.68 and 1,762,020.48 is: 2,431,420.14
Step by Step Solution
- Step 1: Write the proportion equation
3,138,992.16 : 4,331,509.68 = 1,762,020.48 : x - Step 2: Convert to fraction form
3,138,992.16/4,331,509.68 = 1,762,020.48/x - Step 3: Cross multiply
3,138,992.16x = 4,331,509.68 × 1,762,020.48 - Step 4: Simplify right side
3,138,992.16x = 7,632,208,765,478.25 - Step 5: Solve for x
x = 7,632,208,765,478.25/3,138,992.16 - Step 6: Final answer
x = 2,431,420.14
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.