Finding the Fourth Proportional to 1,328,486.70, 1,993,021.65 and 654,890.70
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Solution
The fourth proportional to 1,328,486.70, 1,993,021.65 and 654,890.70 is: 982,479.80
Step by Step Solution
- Step 1: Write the proportion equation
1,328,486.70 : 1,993,021.65 = 654,890.70 : x - Step 2: Convert to fraction form
1,328,486.70/1,993,021.65 = 654,890.70/x - Step 3: Cross multiply
1,328,486.70x = 1,993,021.65 × 654,890.70 - Step 4: Simplify right side
1,328,486.70x = 1,305,211,343,483.65 - Step 5: Solve for x
x = 1,305,211,343,483.65/1,328,486.70 - Step 6: Final answer
x = 982,479.80
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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.