Finding the Fourth Proportional to 812,882.09, 1,121,762.58 and 450,304.85
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Solution
The fourth proportional to 812,882.09, 1,121,762.58 and 450,304.85 is: 621,412.55
Step by Step Solution
- Step 1: Write the proportion equation
812,882.09 : 1,121,762.58 = 450,304.85 : x - Step 2: Convert to fraction form
812,882.09/1,121,762.58 = 450,304.85/x - Step 3: Cross multiply
812,882.09x = 1,121,762.58 × 450,304.85 - Step 4: Simplify right side
812,882.09x = 505,135,130,322.51 - Step 5: Solve for x
x = 505,135,130,322.51/812,882.09 - Step 6: Final answer
x = 621,412.55
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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.