Finding the Fourth Proportional to 853,122.20, 1,177,378.26 and 490,663.40
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Solution
The fourth proportional to 853,122.20, 1,177,378.26 and 490,663.40 is: 677,155.54
Step by Step Solution
- Step 1: Write the proportion equation
853,122.20 : 1,177,378.26 = 490,663.40 : x - Step 2: Convert to fraction form
853,122.20/1,177,378.26 = 490,663.40/x - Step 3: Cross multiply
853,122.20x = 1,177,378.26 × 490,663.40 - Step 4: Simplify right side
853,122.20x = 577,696,420,137.68 - Step 5: Solve for x
x = 577,696,420,137.68/853,122.20 - Step 6: Final answer
x = 677,155.54
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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.