Finding the Fourth Proportional to 2,215,322.97, 3,057,070.12 and 1,221,930.14
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Solution
The fourth proportional to 2,215,322.97, 3,057,070.12 and 1,221,930.14 is: 1,686,221.91
Step by Step Solution
- Step 1: Write the proportion equation
2,215,322.97 : 3,057,070.12 = 1,221,930.14 : x - Step 2: Convert to fraction form
2,215,322.97/3,057,070.12 = 1,221,930.14/x - Step 3: Cross multiply
2,215,322.97x = 3,057,070.12 × 1,221,930.14 - Step 4: Simplify right side
2,215,322.97x = 3,735,526,119,721.42 - Step 5: Solve for x
x = 3,735,526,119,721.42/2,215,322.97 - Step 6: Final answer
x = 1,686,221.91
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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.