Finding the Fourth Proportional to 7,378,757.13, 10,182,698.79 and 4,115,783.22
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Solution
The fourth proportional to 7,378,757.13, 10,182,698.79 and 4,115,783.22 is: 5,679,788.63
Step by Step Solution
- Step 1: Write the proportion equation
7,378,757.13 : 10,182,698.79 = 4,115,783.22 : x - Step 2: Convert to fraction form
7,378,757.13/10,182,698.79 = 4,115,783.22/x - Step 3: Cross multiply
7,378,757.13x = 10,182,698.79 × 4,115,783.22 - Step 4: Simplify right side
7,378,757.13x = 41,909,780,814,196.30 - Step 5: Solve for x
x = 41,909,780,814,196.30/7,378,757.13 - Step 6: Final answer
x = 5,679,788.63
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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.