Finding the Fourth Proportional to 1,988,217.40, 2,743,776.58 and 1,105,249.66
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Solution
The fourth proportional to 1,988,217.40, 2,743,776.58 and 1,105,249.66 is: 1,525,264.86
Step by Step Solution
- Step 1: Write the proportion equation
1,988,217.40 : 2,743,776.58 = 1,105,249.66 : x - Step 2: Convert to fraction form
1,988,217.40/2,743,776.58 = 1,105,249.66/x - Step 3: Cross multiply
1,988,217.40x = 2,743,776.58 × 1,105,249.66 - Step 4: Simplify right side
1,988,217.40x = 3,032,558,132,160.96 - Step 5: Solve for x
x = 3,032,558,132,160.96/1,988,217.40 - Step 6: Final answer
x = 1,525,264.86
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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.