Finding the Fourth Proportional to 2,890,394.05, 3,988,988.73 and 1,601,638.69
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Solution
The fourth proportional to 2,890,394.05, 3,988,988.73 and 1,601,638.69 is: 2,210,397.11
Step by Step Solution
- Step 1: Write the proportion equation
2,890,394.05 : 3,988,988.73 = 1,601,638.69 : x - Step 2: Convert to fraction form
2,890,394.05/3,988,988.73 = 1,601,638.69/x - Step 3: Cross multiply
2,890,394.05x = 3,988,988.73 × 1,601,638.69 - Step 4: Simplify right side
2,890,394.05x = 6,388,918,655,988.83 - Step 5: Solve for x
x = 6,388,918,655,988.83/2,890,394.05 - Step 6: Final answer
x = 2,210,397.11
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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.