Finding the Fourth Proportional to 665,121.70, 997,682.55 and 455,169.70
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Solution
The fourth proportional to 665,121.70, 997,682.55 and 455,169.70 is: 682,754.55
Step by Step Solution
- Step 1: Write the proportion equation
665,121.70 : 997,682.55 = 455,169.70 : x - Step 2: Convert to fraction form
665,121.70/997,682.55 = 455,169.70/x - Step 3: Cross multiply
665,121.70x = 997,682.55 × 455,169.70 - Step 4: Simplify right side
665,121.70x = 454,114,866,978.74 - Step 5: Solve for x
x = 454,114,866,978.74/665,121.70 - Step 6: Final answer
x = 682,754.55
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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.