Finding the Fourth Proportional to 1,212,203.80, 1,818,305.70 and 538,283.80
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Solution
The fourth proportional to 1,212,203.80, 1,818,305.70 and 538,283.80 is: 807,425.70
Step by Step Solution
- Step 1: Write the proportion equation
1,212,203.80 : 1,818,305.70 = 538,283.80 : x - Step 2: Convert to fraction form
1,212,203.80/1,818,305.70 = 538,283.80/x - Step 3: Cross multiply
1,212,203.80x = 1,818,305.70 × 538,283.80 - Step 4: Simplify right side
1,212,203.80x = 978,764,501,757.66 - Step 5: Solve for x
x = 978,764,501,757.66/1,212,203.80 - Step 6: Final answer
x = 807,425.70
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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.