Finding the Fourth Proportional to 7,180,215.68, 9,950,616.80 and 7,043,960.18
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Solution
The fourth proportional to 7,180,215.68, 9,950,616.80 and 7,043,960.18 is: 9,761,788.73
Step by Step Solution
- Step 1: Write the proportion equation
7,180,215.68 : 9,950,616.80 = 7,043,960.18 : x - Step 2: Convert to fraction form
7,180,215.68/9,950,616.80 = 7,043,960.18/x - Step 3: Cross multiply
7,180,215.68x = 9,950,616.80 × 7,043,960.18 - Step 4: Simplify right side
7,180,215.68x = 70,091,748,505,639.02 - Step 5: Solve for x
x = 70,091,748,505,639.02/7,180,215.68 - Step 6: Final answer
x = 9,761,788.73
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.