Finding the Fourth Proportional to 478,873.80, 718,310.70 and 438,438.60
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Solution
The fourth proportional to 478,873.80, 718,310.70 and 438,438.60 is: 657,657.90
Step by Step Solution
- Step 1: Write the proportion equation
478,873.80 : 718,310.70 = 438,438.60 : x - Step 2: Convert to fraction form
478,873.80/718,310.70 = 438,438.60/x - Step 3: Cross multiply
478,873.80x = 718,310.70 × 438,438.60 - Step 4: Simplify right side
478,873.80x = 314,935,137,673.02 - Step 5: Solve for x
x = 314,935,137,673.02/478,873.80 - Step 6: Final answer
x = 657,657.90
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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.