Finding the Fourth Proportional to 6,440,732.34, 8,878,386.15 and 5,457,040.80
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Solution
The fourth proportional to 6,440,732.34, 8,878,386.15 and 5,457,040.80 is: 7,522,392.32
Step by Step Solution
- Step 1: Write the proportion equation
6,440,732.34 : 8,878,386.15 = 5,457,040.80 : x - Step 2: Convert to fraction form
6,440,732.34/8,878,386.15 = 5,457,040.80/x - Step 3: Cross multiply
6,440,732.34x = 8,878,386.15 × 5,457,040.80 - Step 4: Simplify right side
6,440,732.34x = 48,449,715,458,704.92 - Step 5: Solve for x
x = 48,449,715,458,704.92/6,440,732.34 - Step 6: Final answer
x = 7,522,392.32
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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.