Finding the Fourth Proportional to 638,450.14, 881,067.99 and 351,980.48
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Solution
The fourth proportional to 638,450.14, 881,067.99 and 351,980.48 is: 485,736.81
Step by Step Solution
- Step 1: Write the proportion equation
638,450.14 : 881,067.99 = 351,980.48 : x - Step 2: Convert to fraction form
638,450.14/881,067.99 = 351,980.48/x - Step 3: Cross multiply
638,450.14x = 881,067.99 × 351,980.48 - Step 4: Simplify right side
638,450.14x = 310,118,732,712.91 - Step 5: Solve for x
x = 310,118,732,712.91/638,450.14 - Step 6: Final answer
x = 485,736.81
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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.