Finding the Fourth Proportional to 818,832.80, 1,129,991.60 and 474,735.60
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Solution
The fourth proportional to 818,832.80, 1,129,991.60 and 474,735.60 is: 655,136.48
Step by Step Solution
- Step 1: Write the proportion equation
818,832.80 : 1,129,991.60 = 474,735.60 : x - Step 2: Convert to fraction form
818,832.80/1,129,991.60 = 474,735.60/x - Step 3: Cross multiply
818,832.80x = 1,129,991.60 × 474,735.60 - Step 4: Simplify right side
818,832.80x = 536,447,240,220.96 - Step 5: Solve for x
x = 536,447,240,220.96/818,832.80 - Step 6: Final answer
x = 655,136.48
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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.