Finding the Fourth Proportional to 511,985.21, 768,974.41 and 417,285.37
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Solution
The fourth proportional to 511,985.21, 768,974.41 and 417,285.37 is: 626,740.32
Step by Step Solution
- Step 1: Write the proportion equation
511,985.21 : 768,974.41 = 417,285.37 : x - Step 2: Convert to fraction form
511,985.21/768,974.41 = 417,285.37/x - Step 3: Cross multiply
511,985.21x = 768,974.41 × 417,285.37 - Step 4: Simplify right side
511,985.21x = 320,881,772,680.21 - Step 5: Solve for x
x = 320,881,772,680.21/511,985.21 - Step 6: Final answer
x = 626,740.32
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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.