Finding the Fourth Proportional to 1,378,754.48, 2,068,128.63 and 656,905.05
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Solution
The fourth proportional to 1,378,754.48, 2,068,128.63 and 656,905.05 is: 985,356.10
Step by Step Solution
- Step 1: Write the proportion equation
1,378,754.48 : 2,068,128.63 = 656,905.05 : x - Step 2: Convert to fraction form
1,378,754.48/2,068,128.63 = 656,905.05/x - Step 3: Cross multiply
1,378,754.48x = 2,068,128.63 × 656,905.05 - Step 4: Simplify right side
1,378,754.48x = 1,358,564,141,096.58 - Step 5: Solve for x
x = 1,358,564,141,096.58/1,378,754.48 - Step 6: Final answer
x = 985,356.10
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.