Finding the Fourth Proportional to 1,288,548.11, 1,778,147.69 and 715,625.19
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Solution
The fourth proportional to 1,288,548.11, 1,778,147.69 and 715,625.19 is: 987,535.71
Step by Step Solution
- Step 1: Write the proportion equation
1,288,548.11 : 1,778,147.69 = 715,625.19 : x - Step 2: Convert to fraction form
1,288,548.11/1,778,147.69 = 715,625.19/x - Step 3: Cross multiply
1,288,548.11x = 1,778,147.69 × 715,625.19 - Step 4: Simplify right side
1,288,548.11x = 1,272,487,274,926.19 - Step 5: Solve for x
x = 1,272,487,274,926.19/1,288,548.11 - Step 6: Final answer
x = 987,535.71
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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.