Finding the Fourth Proportional to 499,439.62, 689,294.10 and 281,692.99
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Solution
The fourth proportional to 499,439.62, 689,294.10 and 281,692.99 is: 388,774.36
Step by Step Solution
- Step 1: Write the proportion equation
499,439.62 : 689,294.10 = 281,692.99 : x - Step 2: Convert to fraction form
499,439.62/689,294.10 = 281,692.99/x - Step 3: Cross multiply
499,439.62x = 689,294.10 × 281,692.99 - Step 4: Simplify right side
499,439.62x = 194,169,317,936.33 - Step 5: Solve for x
x = 194,169,317,936.33/499,439.62 - Step 6: Final answer
x = 388,774.36
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.