Finding the Fourth Proportional to 668,866.30, 1,001,938.65 and 415,368.70
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Solution
The fourth proportional to 668,866.30, 1,001,938.65 and 415,368.70 is: 622,207.99
Step by Step Solution
- Step 1: Write the proportion equation
668,866.30 : 1,001,938.65 = 415,368.70 : x - Step 2: Convert to fraction form
668,866.30/1,001,938.65 = 415,368.70/x - Step 3: Cross multiply
668,866.30x = 1,001,938.65 × 415,368.70 - Step 4: Simplify right side
668,866.30x = 416,173,954,530.26 - Step 5: Solve for x
x = 416,173,954,530.26/668,866.30 - Step 6: Final answer
x = 622,207.99
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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.