Finding the Fourth Proportional to 398,649,809.60, 597,330,861.60 and 225,612,036.80
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Solution
The fourth proportional to 398,649,809.60, 597,330,861.60 and 225,612,036.80 is: 338,053,672.88
Step by Step Solution
- Step 1: Write the proportion equation
398,649,809.60 : 597,330,861.60 = 225,612,036.80 : x - Step 2: Convert to fraction form
398,649,809.60/597,330,861.60 = 225,612,036.80/x - Step 3: Cross multiply
398,649,809.60x = 597,330,861.60 × 225,612,036.80 - Step 4: Simplify right side
398,649,809.60x = 134,765,032,329,074,912 - Step 5: Solve for x
x = 134,765,032,329,074,912/398,649,809.60 - Step 6: Final answer
x = 338,053,672.88
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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.