Finding the Fourth Proportional to 7,292,987.20, 10,949,330.40 and 4,263,457.60
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Solution
The fourth proportional to 7,292,987.20, 10,949,330.40 and 4,263,457.60 is: 6,400,944.45
Step by Step Solution
- Step 1: Write the proportion equation
7,292,987.20 : 10,949,330.40 = 4,263,457.60 : x - Step 2: Convert to fraction form
7,292,987.20/10,949,330.40 = 4,263,457.60/x - Step 3: Cross multiply
7,292,987.20x = 10,949,330.40 × 4,263,457.60 - Step 4: Simplify right side
7,292,987.20x = 46,682,005,908,791.04 - Step 5: Solve for x
x = 46,682,005,908,791.04/7,292,987.20 - Step 6: Final answer
x = 6,400,944.45
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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.