Finding the Fourth Proportional to 638,450.64, 881,068.68 and 351,980.98
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Solution
The fourth proportional to 638,450.64, 881,068.68 and 351,980.98 is: 485,737.50
Step by Step Solution
- Step 1: Write the proportion equation
638,450.64 : 881,068.68 = 351,980.98 : x - Step 2: Convert to fraction form
638,450.64/881,068.68 = 351,980.98/x - Step 3: Cross multiply
638,450.64x = 881,068.68 × 351,980.98 - Step 4: Simplify right side
638,450.64x = 310,119,416,553.75 - Step 5: Solve for x
x = 310,119,416,553.75/638,450.64 - Step 6: Final answer
x = 485,737.50
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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.