Finding the Fourth Proportional to 665,918.63, 918,742.84 and 379,235.74
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Solution
The fourth proportional to 665,918.63, 918,742.84 and 379,235.74 is: 523,217.26
Step by Step Solution
- Step 1: Write the proportion equation
665,918.63 : 918,742.84 = 379,235.74 : x - Step 2: Convert to fraction form
665,918.63/918,742.84 = 379,235.74/x - Step 3: Cross multiply
665,918.63x = 918,742.84 × 379,235.74 - Step 4: Simplify right side
665,918.63x = 348,420,119,448.33 - Step 5: Solve for x
x = 348,420,119,448.33/665,918.63 - Step 6: Final answer
x = 523,217.26
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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.