Finding the Fourth Proportional to 1,128,736.35, 1,557,212.73 and 645,042.00
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Solution
The fourth proportional to 1,128,736.35, 1,557,212.73 and 645,042.00 is: 889,904.55
Step by Step Solution
- Step 1: Write the proportion equation
1,128,736.35 : 1,557,212.73 = 645,042.00 : x - Step 2: Convert to fraction form
1,128,736.35/1,557,212.73 = 645,042.00/x - Step 3: Cross multiply
1,128,736.35x = 1,557,212.73 × 645,042.00 - Step 4: Simplify right side
1,128,736.35x = 1,004,467,612,074.34 - Step 5: Solve for x
x = 1,004,467,612,074.34/1,128,736.35 - Step 6: Final answer
x = 889,904.55
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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.