Finding the Fourth Proportional to 458,461.80, 687,692.70 and 318,493.80
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Solution
The fourth proportional to 458,461.80, 687,692.70 and 318,493.80 is: 477,740.70
Step by Step Solution
- Step 1: Write the proportion equation
458,461.80 : 687,692.70 = 318,493.80 : x - Step 2: Convert to fraction form
458,461.80/687,692.70 = 318,493.80/x - Step 3: Cross multiply
458,461.80x = 687,692.70 × 318,493.80 - Step 4: Simplify right side
458,461.80x = 219,025,861,255.26 - Step 5: Solve for x
x = 219,025,861,255.26/458,461.80 - Step 6: Final answer
x = 477,740.70
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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.