Finding the Fourth Proportional to 612,134.40, 918,201.60 and 328,699.20
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Solution
The fourth proportional to 612,134.40, 918,201.60 and 328,699.20 is: 493,048.80
Step by Step Solution
- Step 1: Write the proportion equation
612,134.40 : 918,201.60 = 328,699.20 : x - Step 2: Convert to fraction form
612,134.40/918,201.60 = 328,699.20/x - Step 3: Cross multiply
612,134.40x = 918,201.60 × 328,699.20 - Step 4: Simplify right side
612,134.40x = 301,812,131,358.72 - Step 5: Solve for x
x = 301,812,131,358.72/612,134.40 - Step 6: Final answer
x = 493,048.80
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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.