Finding the Fourth Proportional to 1,122,814.12, 1,684,234.54 and 313,149.28
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Solution
The fourth proportional to 1,122,814.12, 1,684,234.54 and 313,149.28 is: 469,727.64
Step by Step Solution
- Step 1: Write the proportion equation
1,122,814.12 : 1,684,234.54 = 313,149.28 : x - Step 2: Convert to fraction form
1,122,814.12/1,684,234.54 = 313,149.28/x - Step 3: Cross multiply
1,122,814.12x = 1,684,234.54 × 313,149.28 - Step 4: Simplify right side
1,122,814.12x = 527,416,825,130.96 - Step 5: Solve for x
x = 527,416,825,130.96/1,122,814.12 - Step 6: Final answer
x = 469,727.64
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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.