Finding the Fourth Proportional to 1,289,042.58, 1,778,818.41 and 716,117.70
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Solution
The fourth proportional to 1,289,042.58, 1,778,818.41 and 716,117.70 is: 988,208.90
Step by Step Solution
- Step 1: Write the proportion equation
1,289,042.58 : 1,778,818.41 = 716,117.70 : x - Step 2: Convert to fraction form
1,289,042.58/1,778,818.41 = 716,117.70/x - Step 3: Cross multiply
1,289,042.58x = 1,778,818.41 × 716,117.70 - Step 4: Simplify right side
1,289,042.58x = 1,273,843,348,486.86 - Step 5: Solve for x
x = 1,273,843,348,486.86/1,289,042.58 - Step 6: Final answer
x = 988,208.90
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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.