Finding the Fourth Proportional to 620,593,316.80, 930,889,975.20 and 275,180,286.40
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Solution
The fourth proportional to 620,593,316.80, 930,889,975.20 and 275,180,286.40 is: 412,770,429.60
Step by Step Solution
- Step 1: Write the proportion equation
620,593,316.80 : 930,889,975.20 = 275,180,286.40 : x - Step 2: Convert to fraction form
620,593,316.80/930,889,975.20 = 275,180,286.40/x - Step 3: Cross multiply
620,593,316.80x = 930,889,975.20 × 275,180,286.40 - Step 4: Simplify right side
620,593,316.80x = 256,162,569,982,424,896 - Step 5: Solve for x
x = 256,162,569,982,424,896/620,593,316.80 - Step 6: Final answer
x = 412,770,429.60
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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.