Finding the Fourth Proportional to 1,288,745.64, 1,778,419.78 and 715,822.56
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Solution
The fourth proportional to 1,288,745.64, 1,778,419.78 and 715,822.56 is: 987,807.80
Step by Step Solution
- Step 1: Write the proportion equation
1,288,745.64 : 1,778,419.78 = 715,822.56 : x - Step 2: Convert to fraction form
1,288,745.64/1,778,419.78 = 715,822.56/x - Step 3: Cross multiply
1,288,745.64x = 1,778,419.78 × 715,822.56 - Step 4: Simplify right side
1,288,745.64x = 1,273,032,999,674.24 - Step 5: Solve for x
x = 1,273,032,999,674.24/1,288,745.64 - Step 6: Final answer
x = 987,807.80
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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.