Finding the Fourth Proportional to 1,295,625.80, 1,943,438.70 and 409,161.80
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Solution
The fourth proportional to 1,295,625.80, 1,943,438.70 and 409,161.80 is: 613,742.70
Step by Step Solution
- Step 1: Write the proportion equation
1,295,625.80 : 1,943,438.70 = 409,161.80 : x - Step 2: Convert to fraction form
1,295,625.80/1,943,438.70 = 409,161.80/x - Step 3: Cross multiply
1,295,625.80x = 1,943,438.70 × 409,161.80 - Step 4: Simplify right side
1,295,625.80x = 795,180,876,681.66 - Step 5: Solve for x
x = 795,180,876,681.66/1,295,625.80 - Step 6: Final answer
x = 613,742.70
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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.