Finding the Fourth Proportional to 388,045,652.80, 582,149,349.60 and 129,341,243.20
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Solution
The fourth proportional to 388,045,652.80, 582,149,349.60 and 129,341,243.20 is: 194,038,820.08
Step by Step Solution
- Step 1: Write the proportion equation
388,045,652.80 : 582,149,349.60 = 129,341,243.20 : x - Step 2: Convert to fraction form
388,045,652.80/582,149,349.60 = 129,341,243.20/x - Step 3: Cross multiply
388,045,652.80x = 582,149,349.60 × 129,341,243.20 - Step 4: Simplify right side
388,045,652.80x = 75,295,920,605,335,424 - Step 5: Solve for x
x = 75,295,920,605,335,424/388,045,652.80 - Step 6: Final answer
x = 194,038,820.08
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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.