Finding the Fourth Proportional to 399,649.86, 599,466.29 and 129,777.71
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Solution
The fourth proportional to 399,649.86, 599,466.29 and 129,777.71 is: 194,663.80
Step by Step Solution
- Step 1: Write the proportion equation
399,649.86 : 599,466.29 = 129,777.71 : x - Step 2: Convert to fraction form
399,649.86/599,466.29 = 129,777.71/x - Step 3: Cross multiply
399,649.86x = 599,466.29 × 129,777.71 - Step 4: Simplify right side
399,649.86x = 77,797,358,692.18 - Step 5: Solve for x
x = 77,797,358,692.18/399,649.86 - Step 6: Final answer
x = 194,663.80
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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.