Finding the Fourth Proportional to 354,646,541.20, 531,969,811.80 and 290,873,621.20
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Solution
The fourth proportional to 354,646,541.20, 531,969,811.80 and 290,873,621.20 is: 436,310,431.80
Step by Step Solution
- Step 1: Write the proportion equation
354,646,541.20 : 531,969,811.80 = 290,873,621.20 : x - Step 2: Convert to fraction form
354,646,541.20/531,969,811.80 = 290,873,621.20/x - Step 3: Cross multiply
354,646,541.20x = 531,969,811.80 × 290,873,621.20 - Step 4: Simplify right side
354,646,541.20x = 154,735,985,527,348,480 - Step 5: Solve for x
x = 154,735,985,527,348,480/354,646,541.20 - Step 6: Final answer
x = 436,310,431.80
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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.