Finding the Fourth Proportional to 7,003,185.12, 9,664,395.36 and 3,783,921.12
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Solution
The fourth proportional to 7,003,185.12, 9,664,395.36 and 3,783,921.12 is: 5,221,811.09
Step by Step Solution
- Step 1: Write the proportion equation
7,003,185.12 : 9,664,395.36 = 3,783,921.12 : x - Step 2: Convert to fraction form
7,003,185.12/9,664,395.36 = 3,783,921.12/x - Step 3: Cross multiply
7,003,185.12x = 9,664,395.36 × 3,783,921.12 - Step 4: Simplify right side
7,003,185.12x = 36,569,309,714,734 - Step 5: Solve for x
x = 36,569,309,714,734/7,003,185.12 - Step 6: Final answer
x = 5,221,811.09
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1.5x scale
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.