Finding the Fourth Proportional to 3,987,226.80, 5,502,373.20 and 2,176,390.80
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Solution
The fourth proportional to 3,987,226.80, 5,502,373.20 and 2,176,390.80 is: 3,003,419.42
Step by Step Solution
- Step 1: Write the proportion equation
3,987,226.80 : 5,502,373.20 = 2,176,390.80 : x - Step 2: Convert to fraction form
3,987,226.80/5,502,373.20 = 2,176,390.80/x - Step 3: Cross multiply
3,987,226.80x = 5,502,373.20 × 2,176,390.80 - Step 4: Simplify right side
3,987,226.80x = 11,975,314,410,646.56 - Step 5: Solve for x
x = 11,975,314,410,646.56/3,987,226.80 - Step 6: Final answer
x = 3,003,419.42
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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.