Finding the Fourth Proportional to 1,229,780.09, 1,697,088.33 and 678,524.19
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Solution
The fourth proportional to 1,229,780.09, 1,697,088.33 and 678,524.19 is: 936,358.86
Step by Step Solution
- Step 1: Write the proportion equation
1,229,780.09 : 1,697,088.33 = 678,524.19 : x - Step 2: Convert to fraction form
1,229,780.09/1,697,088.33 = 678,524.19/x - Step 3: Cross multiply
1,229,780.09x = 1,697,088.33 × 678,524.19 - Step 4: Simplify right side
1,229,780.09x = 1,151,515,484,471.70 - Step 5: Solve for x
x = 1,151,515,484,471.70/1,229,780.09 - Step 6: Final answer
x = 936,358.86
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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.