Finding the Fourth Proportional to 749,609.78, 1,124,414.67 and 217,130.99
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Solution
The fourth proportional to 749,609.78, 1,124,414.67 and 217,130.99 is: 325,696.49
Step by Step Solution
- Step 1: Write the proportion equation
749,609.78 : 1,124,414.67 = 217,130.99 : x - Step 2: Convert to fraction form
749,609.78/1,124,414.67 = 217,130.99/x - Step 3: Cross multiply
749,609.78x = 1,124,414.67 × 217,130.99 - Step 4: Simplify right side
749,609.78x = 244,145,270,467.62 - Step 5: Solve for x
x = 244,145,270,467.62/749,609.78 - Step 6: Final answer
x = 325,696.49
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Double scale
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Similar ratio
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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.