Finding the Fourth Proportional to 1,961,442.51, 2,706,859.94 and 1,101,985.53
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Solution
The fourth proportional to 1,961,442.51, 2,706,859.94 and 1,101,985.53 is: 1,520,778.95
Step by Step Solution
- Step 1: Write the proportion equation
1,961,442.51 : 2,706,859.94 = 1,101,985.53 : x - Step 2: Convert to fraction form
1,961,442.51/2,706,859.94 = 1,101,985.53/x - Step 3: Cross multiply
1,961,442.51x = 2,706,859.94 × 1,101,985.53 - Step 4: Simplify right side
1,961,442.51x = 2,982,920,480,106.74 - Step 5: Solve for x
x = 2,982,920,480,106.74/1,961,442.51 - Step 6: Final answer
x = 1,520,778.95
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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.