Finding the Fourth Proportional to 720,485.08, 994,272.74 and 393,804.84
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Solution
The fourth proportional to 720,485.08, 994,272.74 and 393,804.84 is: 543,452.50
Step by Step Solution
- Step 1: Write the proportion equation
720,485.08 : 994,272.74 = 393,804.84 : x - Step 2: Convert to fraction form
720,485.08/994,272.74 = 393,804.84/x - Step 3: Cross multiply
720,485.08x = 994,272.74 × 393,804.84 - Step 4: Simplify right side
720,485.08x = 391,549,417,292.06 - Step 5: Solve for x
x = 391,549,417,292.06/720,485.08 - Step 6: Final answer
x = 543,452.50
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1.5x scale
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.