Finding the Fourth Proportional to 812,810.84, 1,121,629.55 and 450,213.53
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Solution
The fourth proportional to 812,810.84, 1,121,629.55 and 450,213.53 is: 621,267.30
Step by Step Solution
- Step 1: Write the proportion equation
812,810.84 : 1,121,629.55 = 450,213.53 : x - Step 2: Convert to fraction form
812,810.84/1,121,629.55 = 450,213.53/x - Step 3: Cross multiply
812,810.84x = 1,121,629.55 × 450,213.53 - Step 4: Simplify right side
812,810.84x = 504,972,791,198.60 - Step 5: Solve for x
x = 504,972,791,198.60/812,810.84 - Step 6: Final answer
x = 621,267.30
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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.