Finding the Fourth Proportional to 877,840.36, 1,211,405.10 and 490,664.84
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Solution
The fourth proportional to 877,840.36, 1,211,405.10 and 490,664.84 is: 677,109.32
Step by Step Solution
- Step 1: Write the proportion equation
877,840.36 : 1,211,405.10 = 490,664.84 : x - Step 2: Convert to fraction form
877,840.36/1,211,405.10 = 490,664.84/x - Step 3: Cross multiply
877,840.36x = 1,211,405.10 × 490,664.84 - Step 4: Simplify right side
877,840.36x = 594,393,889,566.68 - Step 5: Solve for x
x = 594,393,889,566.68/877,840.36 - Step 6: Final answer
x = 677,109.32
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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.