Finding the Fourth Proportional to 640,178.37, 883,481.58 and 353,692.31
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Solution
The fourth proportional to 640,178.37, 883,481.58 and 353,692.31 is: 488,114.96
Step by Step Solution
- Step 1: Write the proportion equation
640,178.37 : 883,481.58 = 353,692.31 : x - Step 2: Convert to fraction form
640,178.37/883,481.58 = 353,692.31/x - Step 3: Cross multiply
640,178.37x = 883,481.58 × 353,692.31 - Step 4: Simplify right side
640,178.37x = 312,480,636,455.24 - Step 5: Solve for x
x = 312,480,636,455.24/640,178.37 - Step 6: Final answer
x = 488,114.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.