Finding the Fourth Proportional to 665,059.20, 997,588.80 and 455,107.20
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Solution
The fourth proportional to 665,059.20, 997,588.80 and 455,107.20 is: 682,660.80
Step by Step Solution
- Step 1: Write the proportion equation
665,059.20 : 997,588.80 = 455,107.20 : x - Step 2: Convert to fraction form
665,059.20/997,588.80 = 455,107.20/x - Step 3: Cross multiply
665,059.20x = 997,588.80 × 455,107.20 - Step 4: Simplify right side
665,059.20x = 454,009,845,519.36 - Step 5: Solve for x
x = 454,009,845,519.36/665,059.20 - Step 6: Final answer
x = 682,660.80
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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.