Finding the Fourth Proportional to 1,689,623.34, 2,331,660.78 and 915,239.40
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Solution
The fourth proportional to 1,689,623.34, 2,331,660.78 and 915,239.40 is: 1,263,019.85
Step by Step Solution
- Step 1: Write the proportion equation
1,689,623.34 : 2,331,660.78 = 915,239.40 : x - Step 2: Convert to fraction form
1,689,623.34/2,331,660.78 = 915,239.40/x - Step 3: Cross multiply
1,689,623.34x = 2,331,660.78 × 915,239.40 - Step 4: Simplify right side
1,689,623.34x = 2,134,027,813,290.73 - Step 5: Solve for x
x = 2,134,027,813,290.73/1,689,623.34 - Step 6: Final answer
x = 1,263,019.85
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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.