Finding the Fourth Proportional to 664,981.36, 917,680.12 and 378,519.88
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Solution
The fourth proportional to 664,981.36, 917,680.12 and 378,519.88 is: 522,360.76
Step by Step Solution
- Step 1: Write the proportion equation
664,981.36 : 917,680.12 = 378,519.88 : x - Step 2: Convert to fraction form
664,981.36/917,680.12 = 378,519.88/x - Step 3: Cross multiply
664,981.36x = 917,680.12 × 378,519.88 - Step 4: Simplify right side
664,981.36x = 347,360,168,900.79 - Step 5: Solve for x
x = 347,360,168,900.79/664,981.36 - Step 6: Final answer
x = 522,360.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.