Finding the Fourth Proportional to 7,191,213.60, 9,923,807.68 and 3,928,027.08
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Solution
The fourth proportional to 7,191,213.60, 9,923,807.68 and 3,928,027.08 is: 5,420,640.73
Step by Step Solution
- Step 1: Write the proportion equation
7,191,213.60 : 9,923,807.68 = 3,928,027.08 : x - Step 2: Convert to fraction form
7,191,213.60/9,923,807.68 = 3,928,027.08/x - Step 3: Cross multiply
7,191,213.60x = 9,923,807.68 × 3,928,027.08 - Step 4: Simplify right side
7,191,213.60x = 38,980,985,303,751.98 - Step 5: Solve for x
x = 38,980,985,303,751.98/7,191,213.60 - Step 6: Final answer
x = 5,420,640.73
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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.