Finding the Fourth Proportional to 756,135.20, 1,134,202.80 and 488,446.40
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Solution
The fourth proportional to 756,135.20, 1,134,202.80 and 488,446.40 is: 732,669.60
Step by Step Solution
- Step 1: Write the proportion equation
756,135.20 : 1,134,202.80 = 488,446.40 : x - Step 2: Convert to fraction form
756,135.20/1,134,202.80 = 488,446.40/x - Step 3: Cross multiply
756,135.20x = 1,134,202.80 × 488,446.40 - Step 4: Simplify right side
756,135.20x = 553,997,274,529.92 - Step 5: Solve for x
x = 553,997,274,529.92/756,135.20 - Step 6: Final answer
x = 732,669.60
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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.