Finding the Fourth Proportional to 1,389,983, 1,918,163.58 and 786,371
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Solution
The fourth proportional to 1,389,983, 1,918,163.58 and 786,371 is: 1,085,184.65
Step by Step Solution
- Step 1: Write the proportion equation
1,389,983 : 1,918,163.58 = 786,371 : x - Step 2: Convert to fraction form
1,389,983/1,918,163.58 = 786,371/x - Step 3: Cross multiply
1,389,983x = 1,918,163.58 × 786,371 - Step 4: Simplify right side
1,389,983x = 1,508,388,212,568.18 - Step 5: Solve for x
x = 1,508,388,212,568.18/1,389,983 - Step 6: Final answer
x = 1,085,184.65
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.