Finding the Fourth Proportional to 3,179,021.68, 4,387,165.28 and 1,821,157.12
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Solution
The fourth proportional to 3,179,021.68, 4,387,165.28 and 1,821,157.12 is: 2,513,262.92
Step by Step Solution
- Step 1: Write the proportion equation
3,179,021.68 : 4,387,165.28 = 1,821,157.12 : x - Step 2: Convert to fraction form
3,179,021.68/4,387,165.28 = 1,821,157.12/x - Step 3: Cross multiply
3,179,021.68x = 4,387,165.28 × 1,821,157.12 - Step 4: Simplify right side
3,179,021.68x = 7,989,717,299,740.31 - Step 5: Solve for x
x = 7,989,717,299,740.31/3,179,021.68 - Step 6: Final answer
x = 2,513,262.92
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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.