Finding the Fourth Proportional to 985,604.70, 1,380,779.70 and 985,604.70
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Solution
The fourth proportional to 985,604.70, 1,380,779.70 and 985,604.70 is: 1,380,779.70
Step by Step Solution
- Step 1: Write the proportion equation
985,604.70 : 1,380,779.70 = 985,604.70 : x - Step 2: Convert to fraction form
985,604.70/1,380,779.70 = 985,604.70/x - Step 3: Cross multiply
985,604.70x = 1,380,779.70 × 985,604.70 - Step 4: Simplify right side
985,604.70x = 1,360,902,961,984.59 - Step 5: Solve for x
x = 1,360,902,961,984.59/985,604.70 - Step 6: Final answer
x = 1,380,779.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.