Finding the Fourth Proportional to 6,378,886.48, 8,795,712.36 and 5,213,717.68
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Solution
The fourth proportional to 6,378,886.48, 8,795,712.36 and 5,213,717.68 is: 7,189,085.62
Step by Step Solution
- Step 1: Write the proportion equation
6,378,886.48 : 8,795,712.36 = 5,213,717.68 : x - Step 2: Convert to fraction form
6,378,886.48/8,795,712.36 = 5,213,717.68/x - Step 3: Cross multiply
6,378,886.48x = 8,795,712.36 × 5,213,717.68 - Step 4: Simplify right side
6,378,886.48x = 45,858,361,039,526.52 - Step 5: Solve for x
x = 45,858,361,039,526.52/6,378,886.48 - Step 6: Final answer
x = 7,189,085.62
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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.