Finding the Fourth Proportional to 6,421,689.81, 8,863,219.37 and 3,809,643.74
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Solution
The fourth proportional to 6,421,689.81, 8,863,219.37 and 3,809,643.74 is: 5,258,072.13
Step by Step Solution
- Step 1: Write the proportion equation
6,421,689.81 : 8,863,219.37 = 3,809,643.74 : x - Step 2: Convert to fraction form
6,421,689.81/8,863,219.37 = 3,809,643.74/x - Step 3: Cross multiply
6,421,689.81x = 8,863,219.37 × 3,809,643.74 - Step 4: Simplify right side
6,421,689.81x = 33,765,708,189,167.24 - Step 5: Solve for x
x = 33,765,708,189,167.24/6,421,689.81 - Step 6: Final answer
x = 5,258,072.13
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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.