Finding the Fourth Proportional to 1,437,178.07, 2,156,129.60 and 477,638.70
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Solution
The fourth proportional to 1,437,178.07, 2,156,129.60 and 477,638.70 is: 716,578.52
Step by Step Solution
- Step 1: Write the proportion equation
1,437,178.07 : 2,156,129.60 = 477,638.70 : x - Step 2: Convert to fraction form
1,437,178.07/2,156,129.60 = 477,638.70/x - Step 3: Cross multiply
1,437,178.07x = 2,156,129.60 × 477,638.70 - Step 4: Simplify right side
1,437,178.07x = 1,029,850,939,175.52 - Step 5: Solve for x
x = 1,029,850,939,175.52/1,437,178.07 - Step 6: Final answer
x = 716,578.52
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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.