Finding the Fourth Proportional to 6,321,866.74, 8,724,203.92 and 3,421,258.05
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Solution
The fourth proportional to 6,321,866.74, 8,724,203.92 and 3,421,258.05 is: 4,721,351.17
Step by Step Solution
- Step 1: Write the proportion equation
6,321,866.74 : 8,724,203.92 = 3,421,258.05 : x - Step 2: Convert to fraction form
6,321,866.74/8,724,203.92 = 3,421,258.05/x - Step 3: Cross multiply
6,321,866.74x = 8,724,203.92 × 3,421,258.05 - Step 4: Simplify right side
6,321,866.74x = 29,847,752,928,133.89 - Step 5: Solve for x
x = 29,847,752,928,133.89/6,321,866.74 - Step 6: Final answer
x = 4,721,351.17
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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.