Finding the Fourth Proportional to 7,912,782.28, 11,871,169.26 and 3,655,960.12
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Solution
The fourth proportional to 7,912,782.28, 11,871,169.26 and 3,655,960.12 is: 5,484,862.32
Step by Step Solution
- Step 1: Write the proportion equation
7,912,782.28 : 11,871,169.26 = 3,655,960.12 : x - Step 2: Convert to fraction form
7,912,782.28/11,871,169.26 = 3,655,960.12/x - Step 3: Cross multiply
7,912,782.28x = 11,871,169.26 × 3,655,960.12 - Step 4: Simplify right side
7,912,782.28x = 43,400,521,392,329.91 - Step 5: Solve for x
x = 43,400,521,392,329.91/7,912,782.28 - Step 6: Final answer
x = 5,484,862.32
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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.