Finding the Fourth Proportional to 758,649.07, 1,138,143.08 and 285,338.53
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Solution
The fourth proportional to 758,649.07, 1,138,143.08 and 285,338.53 is: 428,071.54
Step by Step Solution
- Step 1: Write the proportion equation
758,649.07 : 1,138,143.08 = 285,338.53 : x - Step 2: Convert to fraction form
758,649.07/1,138,143.08 = 285,338.53/x - Step 3: Cross multiply
758,649.07x = 1,138,143.08 × 285,338.53 - Step 4: Simplify right side
758,649.07x = 324,756,071,950.18 - Step 5: Solve for x
x = 324,756,071,950.18/758,649.07 - Step 6: Final answer
x = 428,071.54
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1.5x scale
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.