Finding the Fourth Proportional to 1,207,489.80, 1,811,234.70 and 647,617.80
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Solution
The fourth proportional to 1,207,489.80, 1,811,234.70 and 647,617.80 is: 971,426.70
Step by Step Solution
- Step 1: Write the proportion equation
1,207,489.80 : 1,811,234.70 = 647,617.80 : x - Step 2: Convert to fraction form
1,207,489.80/1,811,234.70 = 647,617.80/x - Step 3: Cross multiply
1,207,489.80x = 1,811,234.70 × 647,617.80 - Step 4: Simplify right side
1,207,489.80x = 1,172,987,831,697.66 - Step 5: Solve for x
x = 1,172,987,831,697.66/1,207,489.80 - Step 6: Final answer
x = 971,426.70
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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.