Finding the Fourth Proportional to 409,381.22, 611,193.30 and 312,813.05
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Solution
The fourth proportional to 409,381.22, 611,193.30 and 312,813.05 is: 467,020.05
Step by Step Solution
- Step 1: Write the proportion equation
409,381.22 : 611,193.30 = 312,813.05 : x - Step 2: Convert to fraction form
409,381.22/611,193.30 = 312,813.05/x - Step 3: Cross multiply
409,381.22x = 611,193.30 × 312,813.05 - Step 4: Simplify right side
409,381.22x = 191,189,237,256.60 - Step 5: Solve for x
x = 191,189,237,256.60/409,381.22 - Step 6: Final answer
x = 467,020.05
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.