Finding the Fourth Proportional to 399,651.86, 599,469.28 and 129,779.70
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Solution
The fourth proportional to 399,651.86, 599,469.28 and 129,779.70 is: 194,666.79
Step by Step Solution
- Step 1: Write the proportion equation
399,651.86 : 599,469.28 = 129,779.70 : x - Step 2: Convert to fraction form
399,651.86/599,469.28 = 129,779.70/x - Step 3: Cross multiply
399,651.86x = 599,469.28 × 129,779.70 - Step 4: Simplify right side
399,651.86x = 77,798,943,317.62 - Step 5: Solve for x
x = 77,798,943,317.62/399,651.86 - Step 6: Final answer
x = 194,666.79
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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.