Finding the Fourth Proportional to 1,289,045.08, 1,778,821.86 and 716,120.20
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Solution
The fourth proportional to 1,289,045.08, 1,778,821.86 and 716,120.20 is: 988,212.35
Step by Step Solution
- Step 1: Write the proportion equation
1,289,045.08 : 1,778,821.86 = 716,120.20 : x - Step 2: Convert to fraction form
1,289,045.08/1,778,821.86 = 716,120.20/x - Step 3: Cross multiply
1,289,045.08x = 1,778,821.86 × 716,120.20 - Step 4: Simplify right side
1,289,045.08x = 1,273,850,266,147.57 - Step 5: Solve for x
x = 1,273,850,266,147.57/1,289,045.08 - Step 6: Final answer
x = 988,212.35
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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.