Finding the Fourth Proportional to 1,512,372.15, 2,087,220.65 and 1,129,734.63
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Solution
The fourth proportional to 1,512,372.15, 2,087,220.65 and 1,129,734.63 is: 1,559,143.66
Step by Step Solution
- Step 1: Write the proportion equation
1,512,372.15 : 2,087,220.65 = 1,129,734.63 : x - Step 2: Convert to fraction form
1,512,372.15/2,087,220.65 = 1,129,734.63/x - Step 3: Cross multiply
1,512,372.15x = 2,087,220.65 × 1,129,734.63 - Step 4: Simplify right side
1,512,372.15x = 2,358,005,443,107.44 - Step 5: Solve for x
x = 2,358,005,443,107.44/1,512,372.15 - Step 6: Final answer
x = 1,559,143.66
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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.