Finding the Fourth Proportional to 808,634.60, 1,211,202.30 and 434,220.20
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Solution
The fourth proportional to 808,634.60, 1,211,202.30 and 434,220.20 is: 650,390.80
Step by Step Solution
- Step 1: Write the proportion equation
808,634.60 : 1,211,202.30 = 434,220.20 : x - Step 2: Convert to fraction form
808,634.60/1,211,202.30 = 434,220.20/x - Step 3: Cross multiply
808,634.60x = 1,211,202.30 × 434,220.20 - Step 4: Simplify right side
808,634.60x = 525,928,504,946.46 - Step 5: Solve for x
x = 525,928,504,946.46/808,634.60 - Step 6: Final answer
x = 650,390.80
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1.5x scale
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.