Finding the Fourth Proportional to 747,716.10, 1,121,574.15 and 689,979.30
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Solution
The fourth proportional to 747,716.10, 1,121,574.15 and 689,979.30 is: 1,034,968.95
Step by Step Solution
- Step 1: Write the proportion equation
747,716.10 : 1,121,574.15 = 689,979.30 : x - Step 2: Convert to fraction form
747,716.10/1,121,574.15 = 689,979.30/x - Step 3: Cross multiply
747,716.10x = 1,121,574.15 × 689,979.30 - Step 4: Simplify right side
747,716.10x = 773,862,946,915.10 - Step 5: Solve for x
x = 773,862,946,915.10/747,716.10 - Step 6: Final answer
x = 1,034,968.95
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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.