Finding the Fourth Proportional to 1,276,678.05, 1,761,815.70 and 703,730.58
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Solution
The fourth proportional to 1,276,678.05, 1,761,815.70 and 703,730.58 is: 971,148.20
Step by Step Solution
- Step 1: Write the proportion equation
1,276,678.05 : 1,761,815.70 = 703,730.58 : x - Step 2: Convert to fraction form
1,276,678.05/1,761,815.70 = 703,730.58/x - Step 3: Cross multiply
1,276,678.05x = 1,761,815.70 × 703,730.58 - Step 4: Simplify right side
1,276,678.05x = 1,239,843,584,414.11 - Step 5: Solve for x
x = 1,239,843,584,414.11/1,276,678.05 - Step 6: Final answer
x = 971,148.20
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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.