Finding the Fourth Proportional to 645,327,219.70, 967,990,829.55 and 214,505,715.70
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Solution
The fourth proportional to 645,327,219.70, 967,990,829.55 and 214,505,715.70 is: 321,758,573.55
Step by Step Solution
- Step 1: Write the proportion equation
645,327,219.70 : 967,990,829.55 = 214,505,715.70 : x - Step 2: Convert to fraction form
645,327,219.70/967,990,829.55 = 214,505,715.70/x - Step 3: Cross multiply
645,327,219.70x = 967,990,829.55 × 214,505,715.70 - Step 4: Simplify right side
645,327,219.70x = 207,639,565,683,659,424 - Step 5: Solve for x
x = 207,639,565,683,659,424/645,327,219.70 - Step 6: Final answer
x = 321,758,573.55
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1.5x scale
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.