Finding the Fourth Proportional to 892,378.92, 1,338,592.95 and 261,292.80
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Solution
The fourth proportional to 892,378.92, 1,338,592.95 and 261,292.80 is: 391,946.39
Step by Step Solution
- Step 1: Write the proportion equation
892,378.92 : 1,338,592.95 = 261,292.80 : x - Step 2: Convert to fraction form
892,378.92/1,338,592.95 = 261,292.80/x - Step 3: Cross multiply
892,378.92x = 1,338,592.95 × 261,292.80 - Step 4: Simplify right side
892,378.92x = 349,764,699,965.76 - Step 5: Solve for x
x = 349,764,699,965.76/892,378.92 - Step 6: Final answer
x = 391,946.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.