Finding the Fourth Proportional to 1,247,138.88, 1,720,929.90 and 723,768.12
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Solution
The fourth proportional to 1,247,138.88, 1,720,929.90 and 723,768.12 is: 998,729.35
Step by Step Solution
- Step 1: Write the proportion equation
1,247,138.88 : 1,720,929.90 = 723,768.12 : x - Step 2: Convert to fraction form
1,247,138.88/1,720,929.90 = 723,768.12/x - Step 3: Cross multiply
1,247,138.88x = 1,720,929.90 × 723,768.12 - Step 4: Simplify right side
1,247,138.88x = 1,245,554,198,374.79 - Step 5: Solve for x
x = 1,245,554,198,374.79/1,247,138.88 - Step 6: Final answer
x = 998,729.35
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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.