Finding the Fourth Proportional to 989,818.70, 1,484,728.05 and 740,986.70
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Solution
The fourth proportional to 989,818.70, 1,484,728.05 and 740,986.70 is: 1,111,480.05
Step by Step Solution
- Step 1: Write the proportion equation
989,818.70 : 1,484,728.05 = 740,986.70 : x - Step 2: Convert to fraction form
989,818.70/1,484,728.05 = 740,986.70/x - Step 3: Cross multiply
989,818.70x = 1,484,728.05 × 740,986.70 - Step 4: Simplify right side
989,818.70x = 1,100,163,738,166.94 - Step 5: Solve for x
x = 1,100,163,738,166.94/989,818.70 - Step 6: Final answer
x = 1,111,480.05
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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.