Finding the Fourth Proportional to 1,288,768.75, 1,778,501.01 and 715,862.23
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Solution
The fourth proportional to 1,288,768.75, 1,778,501.01 and 715,862.23 is: 987,889.95
Step by Step Solution
- Step 1: Write the proportion equation
1,288,768.75 : 1,778,501.01 = 715,862.23 : x - Step 2: Convert to fraction form
1,288,768.75/1,778,501.01 = 715,862.23/x - Step 3: Cross multiply
1,288,768.75x = 1,778,501.01 × 715,862.23 - Step 4: Simplify right side
1,288,768.75x = 1,273,161,699,075.85 - Step 5: Solve for x
x = 1,273,161,699,075.85/1,288,768.75 - Step 6: Final answer
x = 987,889.95
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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.