Finding the Fourth Proportional to 665,535.60, 918,627.55 and 393,698.00
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Solution
The fourth proportional to 665,535.60, 918,627.55 and 393,698.00 is: 543,414.70
Step by Step Solution
- Step 1: Write the proportion equation
665,535.60 : 918,627.55 = 393,698.00 : x - Step 2: Convert to fraction form
665,535.60/918,627.55 = 393,698.00/x - Step 3: Cross multiply
665,535.60x = 918,627.55 × 393,698.00 - Step 4: Simplify right side
665,535.60x = 361,661,830,492.22 - Step 5: Solve for x
x = 361,661,830,492.22/665,535.60 - Step 6: Final answer
x = 543,414.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.