Finding the Fourth Proportional to 354,646,541.70, 531,969,812.55 and 290,873,621.70
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Solution
The fourth proportional to 354,646,541.70, 531,969,812.55 and 290,873,621.70 is: 436,310,432.55
Step by Step Solution
- Step 1: Write the proportion equation
354,646,541.70 : 531,969,812.55 = 290,873,621.70 : x - Step 2: Convert to fraction form
354,646,541.70/531,969,812.55 = 290,873,621.70/x - Step 3: Cross multiply
354,646,541.70x = 531,969,812.55 × 290,873,621.70 - Step 4: Simplify right side
354,646,541.70x = 154,735,986,011,488,608 - Step 5: Solve for x
x = 154,735,986,011,488,608/354,646,541.70 - Step 6: Final answer
x = 436,310,432.55
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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.