Finding the Fourth Proportional to 7,780,321.11, 11,671,994.34 and 2,987,658.03
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Solution
The fourth proportional to 7,780,321.11, 11,671,994.34 and 2,987,658.03 is: 4,482,067.92
Step by Step Solution
- Step 1: Write the proportion equation
7,780,321.11 : 11,671,994.34 = 2,987,658.03 : x - Step 2: Convert to fraction form
7,780,321.11/11,671,994.34 = 2,987,658.03/x - Step 3: Cross multiply
7,780,321.11x = 11,671,994.34 × 2,987,658.03 - Step 4: Simplify right side
7,780,321.11x = 34,871,927,616,015.55 - Step 5: Solve for x
x = 34,871,927,616,015.55/7,780,321.11 - Step 6: Final answer
x = 4,482,067.92
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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.