Finding the Fourth Proportional to 1,109,212.02, 1,659,440.36 and 840,115.53
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Solution
The fourth proportional to 1,109,212.02, 1,659,440.36 and 840,115.53 is: 1,256,857.66
Step by Step Solution
- Step 1: Write the proportion equation
1,109,212.02 : 1,659,440.36 = 840,115.53 : x - Step 2: Convert to fraction form
1,109,212.02/1,659,440.36 = 840,115.53/x - Step 3: Cross multiply
1,109,212.02x = 1,659,440.36 × 840,115.53 - Step 4: Simplify right side
1,109,212.02x = 1,394,121,619,645.08 - Step 5: Solve for x
x = 1,394,121,619,645.08/1,109,212.02 - Step 6: Final answer
x = 1,256,857.66
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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.