Finding the Fourth Proportional to 1,405,389.48, 1,939,438.11 and 760,809.66
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Solution
The fourth proportional to 1,405,389.48, 1,939,438.11 and 760,809.66 is: 1,049,917.67
Step by Step Solution
- Step 1: Write the proportion equation
1,405,389.48 : 1,939,438.11 = 760,809.66 : x - Step 2: Convert to fraction form
1,405,389.48/1,939,438.11 = 760,809.66/x - Step 3: Cross multiply
1,405,389.48x = 1,939,438.11 × 760,809.66 - Step 4: Simplify right side
1,405,389.48x = 1,475,543,249,060.14 - Step 5: Solve for x
x = 1,475,543,249,060.14/1,405,389.48 - Step 6: Final answer
x = 1,049,917.67
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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.