Finding the Fourth Proportional to 3,171,269.79, 4,376,355.12 and 1,720,965.24
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Solution
The fourth proportional to 3,171,269.79, 4,376,355.12 and 1,720,965.24 is: 2,374,933.56
Step by Step Solution
- Step 1: Write the proportion equation
3,171,269.79 : 4,376,355.12 = 1,720,965.24 : x - Step 2: Convert to fraction form
3,171,269.79/4,376,355.12 = 1,720,965.24/x - Step 3: Cross multiply
3,171,269.79x = 4,376,355.12 × 1,720,965.24 - Step 4: Simplify right side
3,171,269.79x = 7,531,555,039,416.03 - Step 5: Solve for x
x = 7,531,555,039,416.03/3,171,269.79 - Step 6: Final answer
x = 2,374,933.56
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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.