Finding the Fourth Proportional to 6,489,661.44, 8,956,856.97 and 3,911,345.58
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Solution
The fourth proportional to 6,489,661.44, 8,956,856.97 and 3,911,345.58 is: 5,398,334.45
Step by Step Solution
- Step 1: Write the proportion equation
6,489,661.44 : 8,956,856.97 = 3,911,345.58 : x - Step 2: Convert to fraction form
6,489,661.44/8,956,856.97 = 3,911,345.58/x - Step 3: Cross multiply
6,489,661.44x = 8,956,856.97 × 3,911,345.58 - Step 4: Simplify right side
6,489,661.44x = 35,033,362,920,301.70 - Step 5: Solve for x
x = 35,033,362,920,301.70/6,489,661.44 - Step 6: Final answer
x = 5,398,334.45
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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.