Finding the Fourth Proportional to 778,873.80, 1,168,310.70 and 305,574.60
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Solution
The fourth proportional to 778,873.80, 1,168,310.70 and 305,574.60 is: 458,361.90
Step by Step Solution
- Step 1: Write the proportion equation
778,873.80 : 1,168,310.70 = 305,574.60 : x - Step 2: Convert to fraction form
778,873.80/1,168,310.70 = 305,574.60/x - Step 3: Cross multiply
778,873.80x = 1,168,310.70 × 305,574.60 - Step 4: Simplify right side
778,873.80x = 357,006,074,828.22 - Step 5: Solve for x
x = 357,006,074,828.22/778,873.80 - Step 6: Final answer
x = 458,361.90
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Similar ratio
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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.