Finding the Fourth Proportional to 816,805.68, 1,224,104.54 and 311,090.79
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Solution
The fourth proportional to 816,805.68, 1,224,104.54 and 311,090.79 is: 466,215.72
Step by Step Solution
- Step 1: Write the proportion equation
816,805.68 : 1,224,104.54 = 311,090.79 : x - Step 2: Convert to fraction form
816,805.68/1,224,104.54 = 311,090.79/x - Step 3: Cross multiply
816,805.68x = 1,224,104.54 × 311,090.79 - Step 4: Simplify right side
816,805.68x = 380,807,645,823.20 - Step 5: Solve for x
x = 380,807,645,823.20/816,805.68 - Step 6: Final answer
x = 466,215.72
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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.