Finding the Fourth Proportional to 1,186,747.32, 1,637,709.81 and 642,885.36
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Solution
The fourth proportional to 1,186,747.32, 1,637,709.81 and 642,885.36 is: 887,180.99
Step by Step Solution
- Step 1: Write the proportion equation
1,186,747.32 : 1,637,709.81 = 642,885.36 : x - Step 2: Convert to fraction form
1,186,747.32/1,637,709.81 = 642,885.36/x - Step 3: Cross multiply
1,186,747.32x = 1,637,709.81 × 642,885.36 - Step 4: Simplify right side
1,186,747.32x = 1,052,859,660,777.38 - Step 5: Solve for x
x = 1,052,859,660,777.38/1,186,747.32 - Step 6: Final answer
x = 887,180.99
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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.