Finding the Fourth Proportional to 889,743.12, 1,340,686.20 and 735,428.40
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Solution
The fourth proportional to 889,743.12, 1,340,686.20 and 735,428.40 is: 1,108,161.09
Step by Step Solution
- Step 1: Write the proportion equation
889,743.12 : 1,340,686.20 = 735,428.40 : x - Step 2: Convert to fraction form
889,743.12/1,340,686.20 = 735,428.40/x - Step 3: Cross multiply
889,743.12x = 1,340,686.20 × 735,428.40 - Step 4: Simplify right side
889,743.12x = 985,978,706,968.08 - Step 5: Solve for x
x = 985,978,706,968.08/889,743.12 - Step 6: Final answer
x = 1,108,161.09
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.