Finding the Fourth Proportional to 426,204.80, 639,652.80 and 412,380.80
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Solution
The fourth proportional to 426,204.80, 639,652.80 and 412,380.80 is: 618,905.59
Step by Step Solution
- Step 1: Write the proportion equation
426,204.80 : 639,652.80 = 412,380.80 : x - Step 2: Convert to fraction form
426,204.80/639,652.80 = 412,380.80/x - Step 3: Cross multiply
426,204.80x = 639,652.80 × 412,380.80 - Step 4: Simplify right side
426,204.80x = 263,780,533,386.24 - Step 5: Solve for x
x = 263,780,533,386.24/426,204.80 - Step 6: Final answer
x = 618,905.59
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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.