Finding the Fourth Proportional to 1,247,920.21, 1,722,130.23 and 704,171.26
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Solution
The fourth proportional to 1,247,920.21, 1,722,130.23 and 704,171.26 is: 971,756.53
Step by Step Solution
- Step 1: Write the proportion equation
1,247,920.21 : 1,722,130.23 = 704,171.26 : x - Step 2: Convert to fraction form
1,247,920.21/1,722,130.23 = 704,171.26/x - Step 3: Cross multiply
1,247,920.21x = 1,722,130.23 × 704,171.26 - Step 4: Simplify right side
1,247,920.21x = 1,212,674,613,943.19 - Step 5: Solve for x
x = 1,212,674,613,943.19/1,247,920.21 - Step 6: Final answer
x = 971,756.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.