Finding the Fourth Proportional to 2,166,028.97, 2,989,120.68 and 1,186,030.10
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Solution
The fourth proportional to 2,166,028.97, 2,989,120.68 and 1,186,030.10 is: 1,636,721.93
Step by Step Solution
- Step 1: Write the proportion equation
2,166,028.97 : 2,989,120.68 = 1,186,030.10 : x - Step 2: Convert to fraction form
2,166,028.97/2,989,120.68 = 1,186,030.10/x - Step 3: Cross multiply
2,166,028.97x = 2,989,120.68 × 1,186,030.10 - Step 4: Simplify right side
2,166,028.97x = 3,545,187,099,012.47 - Step 5: Solve for x
x = 3,545,187,099,012.47/2,166,028.97 - Step 6: Final answer
x = 1,636,721.93
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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.