Finding the Fourth Proportional to 816,129.70, 1,224,194.55 and 442,881.70
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Solution
The fourth proportional to 816,129.70, 1,224,194.55 and 442,881.70 is: 664,322.55
Step by Step Solution
- Step 1: Write the proportion equation
816,129.70 : 1,224,194.55 = 442,881.70 : x - Step 2: Convert to fraction form
816,129.70/1,224,194.55 = 442,881.70/x - Step 3: Cross multiply
816,129.70x = 1,224,194.55 × 442,881.70 - Step 4: Simplify right side
816,129.70x = 542,173,363,434.74 - Step 5: Solve for x
x = 542,173,363,434.74/816,129.70 - Step 6: Final answer
x = 664,322.55
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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.