Finding the Fourth Proportional to 989,743.80, 1,389,373.80 and 989,743.80
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Solution
The fourth proportional to 989,743.80, 1,389,373.80 and 989,743.80 is: 1,389,373.80
Step by Step Solution
- Step 1: Write the proportion equation
989,743.80 : 1,389,373.80 = 989,743.80 : x - Step 2: Convert to fraction form
989,743.80/1,389,373.80 = 989,743.80/x - Step 3: Cross multiply
989,743.80x = 1,389,373.80 × 989,743.80 - Step 4: Simplify right side
989,743.80x = 1,375,124,104,432.44 - Step 5: Solve for x
x = 1,375,124,104,432.44/989,743.80 - Step 6: Final answer
x = 1,389,373.80
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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.