Finding the Fourth Proportional to 388,045,649.30, 582,149,344.35 and 129,341,239.70
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Solution
The fourth proportional to 388,045,649.30, 582,149,344.35 and 129,341,239.70 is: 194,038,814.83
Step by Step Solution
- Step 1: Write the proportion equation
388,045,649.30 : 582,149,344.35 = 129,341,239.70 : x - Step 2: Convert to fraction form
388,045,649.30/582,149,344.35 = 129,341,239.70/x - Step 3: Cross multiply
388,045,649.30x = 582,149,344.35 × 129,341,239.70 - Step 4: Simplify right side
388,045,649.30x = 75,295,917,888,771,200 - Step 5: Solve for x
x = 75,295,917,888,771,200/388,045,649.30 - Step 6: Final answer
x = 194,038,814.83
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.