Finding the Fourth Proportional to 447,621.80, 671,432.70 and 430,418.60
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Solution
The fourth proportional to 447,621.80, 671,432.70 and 430,418.60 is: 645,627.90
Step by Step Solution
- Step 1: Write the proportion equation
447,621.80 : 671,432.70 = 430,418.60 : x - Step 2: Convert to fraction form
447,621.80/671,432.70 = 430,418.60/x - Step 3: Cross multiply
447,621.80x = 671,432.70 × 430,418.60 - Step 4: Simplify right side
447,621.80x = 288,997,122,728.22 - Step 5: Solve for x
x = 288,997,122,728.22/447,621.80 - Step 6: Final answer
x = 645,627.90
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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.