Finding the Fourth Proportional to 645,634.70, 968,452.05 and 393,692.30
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Solution
The fourth proportional to 645,634.70, 968,452.05 and 393,692.30 is: 590,538.45
Step by Step Solution
- Step 1: Write the proportion equation
645,634.70 : 968,452.05 = 393,692.30 : x - Step 2: Convert to fraction form
645,634.70/968,452.05 = 393,692.30/x - Step 3: Cross multiply
645,634.70x = 968,452.05 × 393,692.30 - Step 4: Simplify right side
645,634.70x = 381,272,115,004.22 - Step 5: Solve for x
x = 381,272,115,004.22/645,634.70 - Step 6: Final answer
x = 590,538.45
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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.