Finding the Fourth Proportional to 1,689,146.72, 2,330,139.12 and 1,044,360.80
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Solution
The fourth proportional to 1,689,146.72, 2,330,139.12 and 1,044,360.80 is: 1,440,671.75
Step by Step Solution
- Step 1: Write the proportion equation
1,689,146.72 : 2,330,139.12 = 1,044,360.80 : x - Step 2: Convert to fraction form
1,689,146.72/2,330,139.12 = 1,044,360.80/x - Step 3: Cross multiply
1,689,146.72x = 2,330,139.12 × 1,044,360.80 - Step 4: Simplify right side
1,689,146.72x = 2,433,505,955,474.50 - Step 5: Solve for x
x = 2,433,505,955,474.50/1,689,146.72 - Step 6: Final answer
x = 1,440,671.75
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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.