Finding the Fourth Proportional to 812,907.02, 1,121,811.54 and 450,354.44
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Solution
The fourth proportional to 812,907.02, 1,121,811.54 and 450,354.44 is: 621,489.05
Step by Step Solution
- Step 1: Write the proportion equation
812,907.02 : 1,121,811.54 = 450,354.44 : x - Step 2: Convert to fraction form
812,907.02/1,121,811.54 = 450,354.44/x - Step 3: Cross multiply
812,907.02x = 1,121,811.54 × 450,354.44 - Step 4: Simplify right side
812,907.02x = 505,212,807,882.24 - Step 5: Solve for x
x = 505,212,807,882.24/812,907.02 - Step 6: Final answer
x = 621,489.05
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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.