Finding the Fourth Proportional to 1,192,220.35, 1,644,430.13 and 784,191.76
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Solution
The fourth proportional to 1,192,220.35, 1,644,430.13 and 784,191.76 is: 1,081,636.09
Step by Step Solution
- Step 1: Write the proportion equation
1,192,220.35 : 1,644,430.13 = 784,191.76 : x - Step 2: Convert to fraction form
1,192,220.35/1,644,430.13 = 784,191.76/x - Step 3: Cross multiply
1,192,220.35x = 1,644,430.13 × 784,191.76 - Step 4: Simplify right side
1,192,220.35x = 1,289,548,552,750.41 - Step 5: Solve for x
x = 1,289,548,552,750.41/1,192,220.35 - Step 6: Final answer
x = 1,081,636.09
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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.