Finding the Fourth Proportional to 1,208,369.99, 1,667,515.33 and 664,505.21
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Solution
The fourth proportional to 1,208,369.99, 1,667,515.33 and 664,505.21 is: 916,997.80
Step by Step Solution
- Step 1: Write the proportion equation
1,208,369.99 : 1,667,515.33 = 664,505.21 : x - Step 2: Convert to fraction form
1,208,369.99/1,667,515.33 = 664,505.21/x - Step 3: Cross multiply
1,208,369.99x = 1,667,515.33 × 664,505.21 - Step 4: Simplify right side
1,208,369.99x = 1,108,072,624,539.87 - Step 5: Solve for x
x = 1,108,072,624,539.87/1,208,369.99 - Step 6: Final answer
x = 916,997.80
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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.