Finding the Fourth Proportional to 7,117,943.80, 10,676,915.70 and 7,051,588.60
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Solution
The fourth proportional to 7,117,943.80, 10,676,915.70 and 7,051,588.60 is: 10,577,382.90
Step by Step Solution
- Step 1: Write the proportion equation
7,117,943.80 : 10,676,915.70 = 7,051,588.60 : x - Step 2: Convert to fraction form
7,117,943.80/10,676,915.70 = 7,051,588.60/x - Step 3: Cross multiply
7,117,943.80x = 10,676,915.70 × 7,051,588.60 - Step 4: Simplify right side
7,117,943.80x = 75,289,217,033,281.02 - Step 5: Solve for x
x = 75,289,217,033,281.02/7,117,943.80 - Step 6: Final answer
x = 10,577,382.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.