Finding the Fourth Proportional to 990,846.72, 1,485,889.74 and 421,867.08
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Solution
The fourth proportional to 990,846.72, 1,485,889.74 and 421,867.08 is: 632,638.68
Step by Step Solution
- Step 1: Write the proportion equation
990,846.72 : 1,485,889.74 = 421,867.08 : x - Step 2: Convert to fraction form
990,846.72/1,485,889.74 = 421,867.08/x - Step 3: Cross multiply
990,846.72x = 1,485,889.74 × 421,867.08 - Step 4: Simplify right side
990,846.72x = 626,847,965,815.76 - Step 5: Solve for x
x = 626,847,965,815.76/990,846.72 - Step 6: Final answer
x = 632,638.68
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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.