Finding the Fourth Proportional to 720,553.85, 1,080,849.80 and 315,537.68
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Solution
The fourth proportional to 720,553.85, 1,080,849.80 and 315,537.68 is: 473,314.84
Step by Step Solution
- Step 1: Write the proportion equation
720,553.85 : 1,080,849.80 = 315,537.68 : x - Step 2: Convert to fraction form
720,553.85/1,080,849.80 = 315,537.68/x - Step 3: Cross multiply
720,553.85x = 1,080,849.80 × 315,537.68 - Step 4: Simplify right side
720,553.85x = 341,048,831,338.53 - Step 5: Solve for x
x = 341,048,831,338.53/720,553.85 - Step 6: Final answer
x = 473,314.84
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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.