Finding the Fourth Proportional to 1,311,936.48, 1,810,478.64 and 738,985.68
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Solution
The fourth proportional to 1,311,936.48, 1,810,478.64 and 738,985.68 is: 1,019,803.79
Step by Step Solution
- Step 1: Write the proportion equation
1,311,936.48 : 1,810,478.64 = 738,985.68 : x - Step 2: Convert to fraction form
1,311,936.48/1,810,478.64 = 738,985.68/x - Step 3: Cross multiply
1,311,936.48x = 1,810,478.64 × 738,985.68 - Step 4: Simplify right side
1,311,936.48x = 1,337,917,788,905.88 - Step 5: Solve for x
x = 1,337,917,788,905.88/1,311,936.48 - Step 6: Final answer
x = 1,019,803.79
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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.