Finding the Fourth Proportional to 638,105.99, 879,374.94 and 456,502.59
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Solution
The fourth proportional to 638,105.99, 879,374.94 and 456,502.59 is: 629,106.99
Step by Step Solution
- Step 1: Write the proportion equation
638,105.99 : 879,374.94 = 456,502.59 : x - Step 2: Convert to fraction form
638,105.99/879,374.94 = 456,502.59/x - Step 3: Cross multiply
638,105.99x = 879,374.94 × 456,502.59 - Step 4: Simplify right side
638,105.99x = 401,436,937,691.10 - Step 5: Solve for x
x = 401,436,937,691.10/638,105.99 - Step 6: Final answer
x = 629,106.99
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1.5x scale
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.