Finding the Fourth Proportional to 990,059.99, 1,485,714.74 and 421,440.26
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Solution
The fourth proportional to 990,059.99, 1,485,714.74 and 421,440.26 is: 632,426.32
Step by Step Solution
- Step 1: Write the proportion equation
990,059.99 : 1,485,714.74 = 421,440.26 : x - Step 2: Convert to fraction form
990,059.99/1,485,714.74 = 421,440.26/x - Step 3: Cross multiply
990,059.99x = 1,485,714.74 × 421,440.26 - Step 4: Simplify right side
990,059.99x = 626,139,996,775.66 - Step 5: Solve for x
x = 626,139,996,775.66/990,059.99 - Step 6: Final answer
x = 632,426.32
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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.