Finding the Fourth Proportional to 1,391,106.15, 2,086,958.58 and 431,542.62
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Solution
The fourth proportional to 1,391,106.15, 2,086,958.58 and 431,542.62 is: 647,406.79
Step by Step Solution
- Step 1: Write the proportion equation
1,391,106.15 : 2,086,958.58 = 431,542.62 : x - Step 2: Convert to fraction form
1,391,106.15/2,086,958.58 = 431,542.62/x - Step 3: Cross multiply
1,391,106.15x = 2,086,958.58 × 431,542.62 - Step 4: Simplify right side
1,391,106.15x = 900,611,563,009.89 - Step 5: Solve for x
x = 900,611,563,009.89/1,391,106.15 - Step 6: Final answer
x = 647,406.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.