Finding the Fourth Proportional to 458,537.80, 687,806.70 and 427,433.80
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Solution
The fourth proportional to 458,537.80, 687,806.70 and 427,433.80 is: 641,150.70
Step by Step Solution
- Step 1: Write the proportion equation
458,537.80 : 687,806.70 = 427,433.80 : x - Step 2: Convert to fraction form
458,537.80/687,806.70 = 427,433.80/x - Step 3: Cross multiply
458,537.80x = 687,806.70 × 427,433.80 - Step 4: Simplify right side
458,537.80x = 293,991,831,446.46 - Step 5: Solve for x
x = 293,991,831,446.46/458,537.80 - Step 6: Final answer
x = 641,150.70
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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.