Finding the Fourth Proportional to 1,221,755.98, 1,686,080.04 and 763,142.08
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Solution
The fourth proportional to 1,221,755.98, 1,686,080.04 and 763,142.08 is: 1,053,171.54
Step by Step Solution
- Step 1: Write the proportion equation
1,221,755.98 : 1,686,080.04 = 763,142.08 : x - Step 2: Convert to fraction form
1,221,755.98/1,686,080.04 = 763,142.08/x - Step 3: Cross multiply
1,221,755.98x = 1,686,080.04 × 763,142.08 - Step 4: Simplify right side
1,221,755.98x = 1,286,718,628,772.08 - Step 5: Solve for x
x = 1,286,718,628,772.08/1,221,755.98 - Step 6: Final answer
x = 1,053,171.54
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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.