Finding the Fourth Proportional to 1,405,319.10, 2,107,663.05 and 646,431.62
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Solution
The fourth proportional to 1,405,319.10, 2,107,663.05 and 646,431.62 is: 969,502.25
Step by Step Solution
- Step 1: Write the proportion equation
1,405,319.10 : 2,107,663.05 = 646,431.62 : x - Step 2: Convert to fraction form
1,405,319.10/2,107,663.05 = 646,431.62/x - Step 3: Cross multiply
1,405,319.10x = 2,107,663.05 × 646,431.62 - Step 4: Simplify right side
1,405,319.10x = 1,362,460,029,287.33 - Step 5: Solve for x
x = 1,362,460,029,287.33/1,405,319.10 - Step 6: Final answer
x = 969,502.25
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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.