Finding the Fourth Proportional to 1,288,395.44, 1,777,991.28 and 715,433.84
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Solution
The fourth proportional to 1,288,395.44, 1,777,991.28 and 715,433.84 is: 987,301.79
Step by Step Solution
- Step 1: Write the proportion equation
1,288,395.44 : 1,777,991.28 = 715,433.84 : x - Step 2: Convert to fraction form
1,288,395.44/1,777,991.28 = 715,433.84/x - Step 3: Cross multiply
1,288,395.44x = 1,777,991.28 × 715,433.84 - Step 4: Simplify right side
1,288,395.44x = 1,272,035,128,936.92 - Step 5: Solve for x
x = 1,272,035,128,936.92/1,288,395.44 - Step 6: Final answer
x = 987,301.79
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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.