Finding the Fourth Proportional to 1,287,338.12, 1,776,408.84 and 763,958.60
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Solution
The fourth proportional to 1,287,338.12, 1,776,408.84 and 763,958.60 is: 1,054,192.98
Step by Step Solution
- Step 1: Write the proportion equation
1,287,338.12 : 1,776,408.84 = 763,958.60 : x - Step 2: Convert to fraction form
1,287,338.12/1,776,408.84 = 763,958.60/x - Step 3: Cross multiply
1,287,338.12x = 1,776,408.84 × 763,958.60 - Step 4: Simplify right side
1,287,338.12x = 1,357,102,810,434.02 - Step 5: Solve for x
x = 1,357,102,810,434.02/1,287,338.12 - Step 6: Final answer
x = 1,054,192.98
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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.