Finding the Fourth Proportional to 3,171,272.09, 4,376,358.27 and 1,720,967.49
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Solution
The fourth proportional to 3,171,272.09, 4,376,358.27 and 1,720,967.49 is: 2,374,936.65
Step by Step Solution
- Step 1: Write the proportion equation
3,171,272.09 : 4,376,358.27 = 1,720,967.49 : x - Step 2: Convert to fraction form
3,171,272.09/4,376,358.27 = 1,720,967.49/x - Step 3: Cross multiply
3,171,272.09x = 4,376,358.27 × 1,720,967.49 - Step 4: Simplify right side
3,171,272.09x = 7,531,570,307,262.64 - Step 5: Solve for x
x = 7,531,570,307,262.64/3,171,272.09 - Step 6: Final answer
x = 2,374,936.65
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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.